Mercurial > hg > xemacs-beta
view etc/TUTORIAL @ 5933:c1e8f3294298 cygwin
revert timeval comment, backed out change to winsock.h and just lots of warnings???
Also updated config.inc.samp to reflect a way to work around lack of windows-runnable hg
author | Henry Thompson <ht@markup.co.uk> |
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date | Thu, 10 Dec 2015 17:55:59 +0000 |
parents | c6b1500299a7 |
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You are looking at the XEmacs tutorial. See end for copyrights and conditions. XEmacs commands generally involve the CONTROL key (sometimes labeled CTRL or CTL) or the META key. "META" is a traditional Emacs term; on most keyboards, the key is labeled "Alt". (On Sun keyboards, the META key is labeled with a diamond, and is *NOT* the Alt key, which also exists.) On some TTY's, there is no META key; in this case, use ESC. Rather than write out META or CONTROL each time we want you to prefix a character, we'll use the following abbreviations: C-<chr> means hold the CONTROL key while typing the character <chr> Thus, C-f would be: hold the CONTROL key and type f. M-<chr> means hold the META (i.e. Alt) key down while typing <chr>. (See above for Sun keyboards and TTY's.) Important note: to end the XEmacs session, type C-x C-c. (Two characters.) To move to the next screen, type <Next> (often labeled PgDn). On TTY's, you may not have such a key; use C-v instead. (Hold down the CONTROL key while typing v.) To move to the previous screen, type <Prior> (often labeled PgUp). On TTY's, use M-v. (Remember, this means META + v; if you have no META or Alt key that works, press and release ESC, then type v.) The characters ">>" at the left margin indicate directions for you to try using a command. For instance: >> Try typing <Next> and then <Prior>, a few times. (Or C-v and M-v, on TTY's.) Note that there is an overlap of two lines when you move from screen to screen; this provides some continuity so you can continue reading the text. In general, every "cursor key" (the arrows and similar keys set off to the right side of the keyboard) has an equivalent binding that uses only the alphanumeric keys in combination with CONTROL and/or META, so that TTY users can use XEmacs. (In fact, in olden days, this "older way" was the only way to do things, and you will still often see references to these keys as the "recommended" way of doing things. We don't actually recommend that you use these older bindings in preference to the more obvious cursor keys, since the cursor keys are easier to remember and usually more convenient to use. However, it's useful to know the older bindings, either in case you ever use a TTY or so that you can make sense of references to them. From now on, we will mention the TTY bindings in parentheses, and expect that TTY users will substitute them whenever we mention a cursor key.) Now you may ask, what is a TTY? A TTY (or "TeleTYpe")is a text-only connection, the kind you get when you use the "telnet" program to log into a remote site. Up till 20 years ago or so, such text-only connections were all that existed to communicate with a computer, usually via a "terminal" (a combination keyboard and monochrome screen) connected directly to a computer. Nowadays, such dedicated TTY's are increasingly rare, and most people only run into them when using telnet. Emacs began in those olden days, and it still carries some baggage from that time, but things have greatly improved since then. Now, you are probably using XEmacs under MS Windows or X Windows, collectively termed a "window system". * SUMMARY --------- The following commands are useful for viewing screenfuls: <Next> Move forward one screenful (C-v on TTY's) <Prior> Move backward one screenful (M-v on TTY's) C-l Clear frame and redisplay all the text, moving the text around the cursor to the center of the window. (That's CONTROL-L, not CONTROL-1.) >> Find the cursor, and note what text is near it. Then type C-l. Find the cursor again and notice that the same text is still near the cursor, but now it is in the center of the screen. If you press C-l again, this piece of text will move to the top of the screen. Press C-l again, and it moves to the bottom. * SOME TERMINOLOGY ------------------ All aspects of computers have terminology associated with them, and until you master the terminology, things can seem overwhelming. To add to this, however, XEmacs has its own terminology, some of which of course includes terms for concepts new to XEmacs. Some XEmacs terminology, however, is just nonstandard terms for familiar objects and concepts. (This is because Emacs began a long time ago, when many standard things in today's computers didn't exist, and others that did exist had different names.) To make things easier for you, the most common XEmacs terms that you will find in this tutorial are defined here, even though some have already been defined above and others aren't discussed in detail until later. This way, if you come across an unfamiliar term, you know exactly where to look to find the definition. Don't worry if you don't understand all the terms; if you keep reading the tutorial, eventually all the terms will be explained in detail. Term Definition -------------------------- C- A keystroke involving the CONTROL key. C-k is sometimes indicated as CONTROL + k or (not in XEmacs) ^K, and means to hold down the CONTROL key and hit the k key. Info The name of XEmacs' online documentation, accessed through C-h i. M- A keystroke involving the META key. See META. META An abstract name for a particular modifier key, which has different correspondences depending on your keyboard. On most keyboards, META is the Alt key, but on Sun keyboards it's a key labeled with a diamond, and *NOT* the Alt key, which also exists. META can also be simulated by pressing ESC before the other key, but in reality this is just two separate keys, not a modifier plus a key: If you want to do M-f M-f, normally you can hold down (e.g.) Alt, hit f twice, and release the Alt, but when using ESC as META, you'd have to type ESC f ESC f. TTY A text-only connection to a computer, such as when you telnet into a machine. See the previous section for more explanation. binding The command that's bound to a particular key sequence; you can find out what the binding is and how the command works using C-h k; it's also possible to change the bindings of key sequences, but this isn't discussed in the tutorial buffer A block of memory holding some text, such as the text of a file, email message, list of files in a directory, etc. All visible windows are always displaying the text of some buffer, and more than one window can be displaying the same buffer. In this case, each buffer has a different value for point (see definition). cursor A block or bar showing where in the text the current insertion point is. cursor key Any of the keys used for moving the cursor, such as the arrow keys, <Next> and <Prior> (often labeled PgUp and PgDn), <Home> and <End>, etc. Usually set off to the right of the main part of the keyboard, often painted gray. echo area A one-line area at the bottom of the frame where messages are output. It shares the same space as the minibuffer, which works because the minibuffer is not active most of the time and is active only for short intervals. (Even then, if a message needs to be displayed, the minibuffer will temporarily disappear, the message will be displayed, and then the minibuffer will appear again in a few seconds.) frame Same as what's standardly called a "window" in a window system. TTY's only have one visible frame, but it's possible to create others and switch between them (sort of like if, in a window system, all your windows were maximized to take up the whole screen, so you could only see one at once). isearch Incremental search. An Emacs invention that is a special, extra-efficient way of searching. Each time you type a character in a search string, XEmacs immediately finds the next match for what you've typed so far. This way, you avoid typing more keys than necessary to find what you're looking for. key sequence A sequence of one or more keystrokes that together make a command. C-x C-f, C-x 5 0, C-l, and <Next> are all key sequences. See also "binding". keystroke A combination of a key and a modifier (e.g. CONTROL, SHIFT, META). kill Standardly known as "cut". Remove text and remember it, so that it can be "yanked" (standardly, "pasted") later. Multiple "kills" are remembered, not only the most recent, and can be accessed using M-y. "kill" is also sometimes used in general to refer to deleting anything other than text, e.g. buffers, toolbar items, local variables, subprocesses, abbreviations, or to terminating the XEmacs process. minibuffer A small buffer (usually one line, but it may expand as necessary) at the bottom of the frame, used when commands need input such as file names. modeline A status line, near the bottom of a window, showing the current file being edited, the current mode, the line number, etc. (If you split a frame into two windows, you get two modelines.) point The location in the text where the cursor is. (Technically, the cursor is *BETWEEN* two text characters, not on one. This is most obvious when you use the bar cursor.) prefix argument An extra piece of information typed just before a command to be executed, which changes how the command works. Prefix arguments typically come in two types: Numeric arguments, which specify repeat counts, screen lines to move to, etc. are are specified using META plus a number before a command; and flag arguments, which are just simple yes/no-type indications to do something differently (e.g. put point at the beginning of inserted text rather than at the end) and are specified using C-u before the command. recursive edit Used when you are in the middle of executing a long command (e.g. a search and replace), and want to temporarily make an edit to some text. Indicated with brackets around the mode name. It's unlikely you'll use this much, if at all, but it's useful to know how to get out if you accidentally get into this mode: use ESC ESC. screen The totality of everything that can be seen on the display. Also used in some expressions: "on/off the screen" means currently visible or invisible. A "screenful" is the amount of text in a particular window that can be viewed at one time. window Non-overlapping division of a frame, standardly called a "pane". Most often, there is only one window in a frame, and then the two terms become essentially synonymous. (Technically, however, the window includes the modeline below it but not the minibuffer.) yank Standardly known as "paste". Insert text that was previously removed and remembered, a process known as "killing", or more standardly "cutting". * BASIC CURSOR CONTROL ---------------------- The first thing that you need to know is how to move around from place to place in the text. You already know how to move forward and backward one screen, but how do you move to a specific place within the text on the screen? There are several ways you can do this. The most basic way is to use the arrow keys, which we refer to as <Left>, <Right>, <Up>, and <Down>. Each of these commands moves the cursor one row or column in a particular direction on the screen. On a TTY, the arrow keys should, hopefully, work the same, but they might not, since TTY's are easy to misconfigure. As mentioned above, for all cursor-key bindings, there are equivalent alphanumeric ones. In this case, the bindings are unfortunately not at all obvious, since they were chosen mnemonically and not visually. Here is a table showing the TTY bindings: Previous line, C-p : : Backward, C-b .... Current cursor position .... Forward, C-f : : Next line, C-n >> Move the cursor to the line in the middle of that diagram using <Down> or <Up>. Then type C-l to see the whole diagram centered in the window. (Remember, TTY users should substitute the appropriate bindings whenever necessary. In this case, use C-n and C-p.) Note the mnemonic significance of the TTY bindings: P for previous, N for next, B for backward and F for forward. If you're on a TTY, you really should spend some time now etching these cursor bindings into your brain. These cursor positioning commands are the most fundamental way to move around and you'll be using them ALL the time, so you will be completely lost without them. Even if you are on a window system and are not forced to learn these bindings, you should try to memorize at least these four commands and in particular their associated words, since variations on them show up in many different keyboard commands, and knowing what they stand for can be of tremendous help. >> Do a few <Down>'s to bring the cursor down to this line. >> Move into the line with <Right>'s and then up with <Up>'s. See what <Up> does when the cursor is in the middle of the line. The location of the cursor in the text is also called "point". You will often see such references to "point" in the documentation, so remember this term. Each line of text ends with a Newline character, which serves to separate it from the following line. The last line in your file ought to have a Newline at the end. XEmacs does not normally require it to have one, but you can change this -- see the menu entry "Options->Editing->Newline at End of File...". (More on menu entries later.) >> Try to <Left> at the beginning of a line. It should move to the end of the previous line. This is because it moves back across the Newline character. <Right> can move across a Newline just like <Left>. >> Do a few more <Left>'s, so you get a feel for where the cursor is. Then do <Right>'s to return to the end of the line. Then do one more <Right> to move to the following line. When you move past the top or bottom of the window, the text beyond the edge shifts onto the screen. This is called "scrolling". It enables XEmacs to move the cursor to the specified place in the text without moving it off the screen. >> Try to move the cursor off the bottom of the window with <Down>, and see what happens. If moving by characters is too slow, you can move by words. C-<Right> (CONTROL + right-arrow key) moves forward a word and C-<Left> moves back a word. On TTY's, use M-f instead of C-<Right> and M-b instead of C-<Left>. >> Type a few C-<Right>'s and C-<Left>'s. When you are in the middle of a word, C-<Right> moves to the end of the word. When you are in whitespace between words, C-<Right> moves to the end of the following word. C-<Left> works likewise in the opposite direction. >> Type C-<Right> and C-<Left> a few times, interspersed with <Right>'s and <Left>'s so that you can observe the action of C-<Right> and C-<Left> from various places inside and between words. Notice the parallel between <Right> and <Left> on the one hand, and C-<Right> and C-<Left> on the other hand. Also notice the parallel between C-f and C-p on the one hand, and M-f and M-p on the other hand. XEmacs tries fairly hard to maintain parallelism in keyboard commands to make them easier to remember, and generally adding CONTROL or META to an operation makes it "more so". META goes beyond CONTROL, often making the units of movement less basic in the process -- words vs. characters, balanced parenthetical expressions vs. words, or sentences vs. lines. Other important cursor motion commands are <Home> and <End> (beginning and end of the line), and C-<Home> and C-<End> (beginning and end of the whole text). Note again the parallelism just mentioned. On TTY's, use C-a and C-e for beginning and end of line, and M-< and M-> for beginning and end of text. (If it helps, think of A as the first letter of the alphabet, and E as standing for "end".) Note that the < and > chars (Less-than and Greater-than) are above the comma and period on most keyboards, so you'll have to use the SHIFT key in conjunction with META. If you have no META, the order is very important: Type ESC first, then type < or >. >> Move the cursor to this line, then try <Home> and <End> a few times. >> (Read this entire entry before doing anything!) Try C-<Home> now, to move to the beginning of the tutorial. Then use <Next> repeatedly to move back here. >> Try all of these commands now a few times for practice. These are the most often used commands. Here is a summary of simple cursor-moving operations. Don't worry if you can't remember everything; you can always move back to this table for reference. KEYSTROKE: SEQUENCE TTY: <Prior> (PgUp) Move backward a screen M-v <Next> (PgDn) Move forward a screen C-v <Left> Move backward a character C-b <Right> Move forward a character C-f C-<Left> Move backward a word M-b C-<Right> Move forward a word M-f <Up> Move to previous line C-p <Down> Move to next line C-n C-<Up> Move 6 lines up C-<Down> Move 6 lines down <Home> Move to beginning of line C-a <End> Move to end of line C-e C-<Home> Move to beginning of text M-< C-<End> Move to end of text M-> * PREFIX ARGUMENTS ------------------ Most XEmacs commands accept a numeric argument; for most commands, this serves as a repeat-count. The way you give a command a repeat count is by holding down the META key while typing the digits. You really only need to hold down META for the first digit; for this reason, an alternative method is to simply hit the ESC key once, then type the digits. (This latter method works on TTY's as well.) The numeric argument is also called a "prefix argument", because you type the argument before the command it applies to. For instance, M-8 <Right> moves forward eight characters. >> Try using <Down> or <Up> with a numeric argument, to move the cursor to a line near this one with just one command. Sometimes, commands use the term "prefix argument" to refer not to a numeric argument, but to just a flag that makes the command do something different if given. (We haven't encountered any such commands so far.) For such commands, the flag is normally given by typing C-u before the command, but generally you can also specify any numeric argument -- the actual number makes no difference. * SCROLLBARS ------------ Unless you are on a TTY, there is probably a rectangular area called a scroll bar at the right hand side of the XEmacs window. You can scroll the text by manipulating the scrollbar with the mouse. The scrollbar has a button in the middle of it, called a thumb. The relative position of this thumb within the rectangle indicates where you are within the file. As you scroll up or down with the cursor keys, the thumb will follow. >> Try holding down the left button on the thumb and moving the mouse up and down. You'll see that the text scrolls up and down as you move the mouse. (NOTE: Some scrollbars, such as the Athena scrollbars under X Windows, work differently. On these, you will have to use the middle button, not the left one.) >> Try clicking the left button in the area above the thumb. This should scroll the text up by a screenful. Similarly, clicking the button below the thumb will scroll down by a screenful. (NOTE: Under Athena, things work differently.) Holding the button down will cause the text to repeatedly scroll by a screenful. >> Most scrollbars have arrows at the top and bottom of the rectangle. Clicking on these will scroll the text up or down by a line, and holding the button down will cause the text to repeatedly scroll by a line. * USING THE MENU ---------------- Unless you are on a TTY, you will notice a menubar at the top of the XEmacs frame. You can use this menubar to access all the most common XEmacs commands, such as "open a file". You will find this easier at first, because you don't need to remember the keystrokes necessary to access any particular command. Once you are comfortable with XEmacs, it will be easy to begin using the keyboard commands because each menu item with a corresponding keyboard command has the command listed next to it. Note that there are many items in the menubar that have no exact keyboard equivalents. For example, the Buffers menu lists all of the available buffers in most-recently used order. You can switch to any buffer by simply findings its name in the Buffers menu and selecting it. You can also configure XEmacs so that you can use the META key to access menu items -- the "accelerator" functionality that is standard under MS Windows. One easy way to do this in XEmacs is using the menu item "Options->Menubars->Alt/Meta Selects Menu Items". When this feature is on, you can select a menu or menu item using the combination of META (i.e. Alt) plus the underlined letter of the menu item. For example, to exit XEmacs, use M-f M-x. We currently don't turn this on by default because it interferes with the traditional usage of META in XEmacs. However, we may do this in the future: Only commands for which there are top-level menus are shadowed by accelerator bindings, and for all those commands, there are equivalents either using cursor keys or on the menus. When we mention a menu selection, it will be specified as just shown -- i.e. a string, with an arrow ("->") separating different submenus or items. In this case, the menu entry just mentioned means "Click the Options menu on the menubar, then the Menubars submenu, the the entry off of that labeled "Alt/Meta Selects Menu Items". In general, XEmacs is highly customizable, and one of the easiest ways to make such customizations is through the Options menu. IMPORTANT: If you want a change on the Options menu to last beyond the current XEmacs session, use "Options->Save Options to Init File". This way, it will be permanent. Otherwise, all Options changes made in the current session will be lost. * WHEN XEMACS IS HUNG OR IN SOME STRANGE MODE --------------------------------------------- If XEmacs stops responding to your commands, you can stop it safely by typing C-g. You can use C-g to stop a command which is taking too long to execute. You can also use C-g to discard a numeric argument or the beginning of a command that you do not want to finish. >> Type M-100 to make a numeric arg of 100 (remember, this means hold down META and type 100, or type ESC 1 0 0), then type C-g. Now type <Right>. It should move just one character, because you canceled the argument with C-g. If XEmacs is in some strange mode and C-g isn't getting out of it, you can use the all-purpose escape mechanism: ESC ESC. (On TTY's, you have to use ESC ESC ESC. The reasons for this are a bit complicated.) Hitting ESC ESC will get you out of almost any weird mode, including selected text, split windows, the minibuffer, recursive edits, "stranded minibuffer requests", and the like. If you have many problems at once, each invocation of ESC ESC will get rid of one, so keep repeating until everything's fixed. REMEMBER: ESC ESC does not work if XEmacs is hung doing some time-consuming operation or running broken code. Use C-g for that. * DISABLED COMMANDS ------------------- Some XEmacs commands are "disabled" so that beginning users cannot use them by accident. If you type one of the disabled commands, XEmacs displays a message saying what the command was, and asking you whether you want to go ahead and execute the command. If you really want to try the command, type <Space> in answer to the question. Normally, if you do not want to execute the disabled command, answer the question with "n". >> Type `C-x n p' (which is a disabled command), then type n to answer the question. * "WINDOWS", I.E. PANES ----------------------- XEmacs can have several panes (i.e. non-overlapping divisions of a window or a TTY screen), each displaying its own text. For historical reasons, these panes are called "windows", and what we normally think of as a window is called a "frame". XEmacs can also have multiple "frames"; this is described later. From now on, we omit the quotes around the XEmacs terms, and if we need to use "window" in the standard sense, we will say "window-system window". At this stage it is better not to go too deeply into the techniques of using multiple windows. But you do need to know how to get rid of extra windows that may appear to display help or output from certain commands. Most of the time, your cursor will be in the new window; if this is the case, simply type q. Alternatively, you can type C-x 0 Delete window. That is, CONTROL-x followed by the digit 0. This command is unlike the other commands you have learned in that it consists of two characters. It starts with the character CONTROL-x. There is a whole series of commands that start with CONTROL-x; many of them have to do with windows, files, buffers, and related things. These commands are two, three or four characters long. >> Move the cursor to this line and type M-0 C-l. (That's a zero, not an Oh.) >> Type CONTROL-h k CONTROL-f. See how this window shrinks, while a new one appears to display documentation on the CONTROL-f command. >> Type q and see the documentation listing window disappear. (Remember that C-l redraws the frame. If you give a numeric argument to this command, it means "redraw the frame and put the current line that many lines from the top of the window." So M-0 C-l means "redraw the frame, putting the current line at the top.") * INSERTING AND DELETING ------------------------ If you want to insert text, just type the text. Characters which you can see, such as A, 7, *, etc. are taken by XEmacs as text and inserted immediately. Type <Return> (the carriage-return key) to insert a Newline character. You can delete the last character you typed by typing <Backspace>. <Backspace> is a key on the keyboard, which may be labeled simply with a left arrow sign. (NOTE: On a few misconfigured TTY's, typing <Backspace> may try to invoke the help system; the symptom of this is a line like "C-h (Type ? for further options)" at the bottom of the frame. If this is the case, type C-g to get out of this, and try using <Delete> from now on in place of <Backspace>.) More generally, <Backspace> deletes the character immediately before the current cursor position. >> Do this now--type a few characters, then delete them by typing <Backspace> a few times. Don't worry about this file being changed; you will not alter the master tutorial. This is your personal copy of it. When a line of text gets too big for one line on the window, the line of text is "continued" onto a second window line. An arrow at the right margin that hooks down and to the left (or a backslash ("\") on TTY's) indicates a line which has been continued. >> Insert text until you reach the right margin, and keep on inserting. You'll see a continuation line appear. >> Use <Backspace>s to delete the text until the line fits on one window line again. The continuation line goes away. You can delete a Newline character just like any other character. Deleting the Newline character between two lines merges them into one line. If the resulting combined line is too long to fit in the window width, it will be displayed with a continuation line. >> Move the cursor to the beginning of a line and type <Backspace>. This merges that line with the previous line. >> Type <Return> to reinsert the Newline you deleted. Remember that most XEmacs commands can be given a repeat count; this includes text characters. Repeating a text character inserts it several times. >> Try that now -- type M-8 * to insert ********. You've now learned the most basic way of typing something in XEmacs and correcting errors. You can delete by words or lines as well. Here is a summary of the delete operations: <Backspace> delete the character just before the cursor <Delete> delete the next character after the cursor C-d same as <Delete> but works on TTY's M-<Backspace> cut ("kill") the word immediately before the cursor M-<Delete> cut ("kill") the next word after the cursor M-d same as M-<Delete> but works on TTY's C-k cut ("kill") from the cursor position to end of line M-k cut ("kill") to the end of the current sentence Notice again the parallelism with no modifier vs. CONTROL vs. META that was mentioned earlier -- although the parallels are not perfect. (In the violent old days when Emacs first began, removing text that could later be re-inserted was called "killing", and re-inserting was called "yanking" -- evidently the designers of Emacs must have been thinking of role-playing games, where killed characters could be easily resurrected with the wave [yank?] of a magic wand. In the more genteel [and realistic] times we live in, the preferred terms are "cut" and "paste".) You can also kill any part of the buffer with one uniform method. Under window systems, the preferred method is to move to one end of that part, hold the SHIFT key down, and use the cursor keys to move to the other end. Then release the SHIFT key and type C-w. That kills all the text between the two positions. An alternative method, which also works on TTY's, is to move to one end of the text, and type C-@ or C-<Space> (either one). Move to the other end and type C-w. >> Move the cursor to the A at the start of the previous paragraph. >> Hold the SHIFT key down. >> Move the cursor to the n in "end", on the third line of the paragraph. >> Release the SHIFT key and type C-w. This will kill the text starting from the A, and ending just before the n. Now try it the other way. >> Type C-/ to undo the killing, or C-_ or C-x u on TTY's. >> Move the cursor to the same A again. >> Type C-<Space>. XEmacs should display a message "Mark set" at the bottom of the frame. >> Move the cursor to the n in "end", on the third line of the paragraph. >> Type C-w. You will get the same result as previously. The difference between "killing" and "deleting" is that "killed" text can be reinserted, whereas "deleted" things cannot be reinserted. Reinsertion of killed text is called "yanking". Generally, the commands that can remove a lot of text kill the text (they set up so that you can yank the text), while the commands that remove just one character, or just blank lines and spaces, do deletion (so you cannot yank that text). Normally, on a window system "killing" text stores it internally but also puts it on the clipboard, just like Cut in a word processor, and "yanking" takes text from the clipboard if available, just like Paste. (This connection to the clipboard can be turned off from the Options menu.) There are also menu items, "Edit->Cut" and "Edit->Paste", that always connect with the clipboard, and equivalent Cut and Paste keys on Sun keyboards. >> Move the cursor to the beginning of a line which is not empty. Then type C-k to kill the text on that line. >> Type C-k a second time. You'll see that it kills the Newline which follows that line. Note that a single C-k kills the contents of the line, and a second C-k kills the line itself, and makes all the other lines move up. C-k treats a numeric argument specially: it kills that many lines AND their contents. This is not mere repetition. M-2 C-k kills two lines and their newlines; typing C-k twice would not do that. Bringing back killed text is called "yanking". (Think of it as yanking back, or pulling back, some text that was taken away.) You can yank the killed text either at the same place where it was killed, or at some other place in the buffer, or even in a different file. You can yank the text several times, which makes multiple copies of it. The command for yanking is C-y. It reinserts the last killed text, after the current cursor position. >> Try it; type C-y to yank the text back. If you do several C-k's in a row, all of the killed text is saved together, so that one C-y will yank all of the lines at once. >> Do this now, type C-k several times. Now to retrieve that killed text: >> Type C-y. Then move the cursor down a few lines and type C-y again. You now see how to copy some text. What do you do if you have some text you want to yank back, and then you kill something else? C-y would yank the more recent kill. But the previous text is not lost. You can get back to it using the M-y command. After you have done C-y to get the most recent kill, typing M-y replaces that yanked text with the previous kill. Typing M-y again and again brings in earlier and earlier kills. When you have reached the text you are looking for, you do not have to do anything to keep it. Just go on with your editing, leaving the yanked text where it is. If you M-y enough times, you come back to the starting point (the most recent kill). >> Kill a line, move around, kill another line. Then do C-y to get back the second killed line. Then do M-y and it will be replaced by the first killed line. Do more M-y's and see what you get. Keep doing them until the second kill line comes back, and then a few more. If you like, you can try giving M-y positive and negative arguments. * UNDO ------ If you make a change to the text, and then decide that it was a mistake, you can undo the change with the undo command, C-/. (On TTY's, use C-_, i.e. CONTROL + underscore, which is normally above the minus sign; i.e. you will have to hold the SHIFT key down, as in CONTROL + SHIFT + minus. If that doesn't work, you can fall back to C-x u; but that has the unfortunate property that it's difficult to execute several times in a row.) Normally, C-/ undoes the changes made by one command; if you repeat the C-/ several times in a row, each repetition undoes one additional command. But there are two exceptions: commands that do not change the text do not count (this includes cursor motion commands and scrolling command), and self-inserting characters are usually handled in groups of up to 20. (This is to reduce the number of C-/'s you have to type to undo insertion of text.) >> Kill this line with C-k, then type C-/ and it should reappear. A numeric argument to C-/ acts as a repeat count. If you change your mind and want to redo changes that you've undone, issue any command other than Undo (usually people move the cursor), and then start undoing again. This will undo your Undo changes; keep hitting Undo, and you will eventually undo all the Undo's, and start undoing your original changes. Essentially, XEmacs treats each Undo as a further change, and records them for undoing just like regular commands; but as long as you keeping issuing Undo commands directly after previous ones, XEmacs remembers where you are in the Undo history so it can keep undoing. Once you issue another command, XEmacs "forgets" and resets its internal pointer to the end of the Undo history. This may seem confusing, so try it out: >> Type a line of text above this one. >> Move to the end of the line you just typed, and hit <Backspace> until you've deleted all characters. >> Type C-/ a number of times to undo some of your deletions. >> Move the cursor left. >> Start typing C-/ again, and it will redo your deletions until there's no text left, then it will start undoing the original deletions. When all the text appears again, further C-/'s will undo the text you originally typed, in groups of up to 20 (see above). As you just saw, you can undo deletion of text just as you can undo killing of text. The distinction between killing something and deleting it affects whether you can yank it with C-y; it makes no difference for undo. * USING THE MOUSE ----------------- On window systems, XEmacs is fully integrated with the mouse. You can position the text cursor by clicking the left button at the desired location, and you can select text by dragging the left mouse button across the text you want to select. (Or alternatively, click the left mouse button at one end of the text, then move to the other end and use Shift-click to select the text.) The middle mouse button is commonly used to choose items that are visible on the screen. For example, if you enter Info (the on-line XEmacs documentation) using C-h i or the Help menu, you can follow a highlighted link by clicking the middle mouse button on it. Similarly, if you are typing a file name in (e.g. when prompted by "Find File") and you hit <Tab> to show the possible completions, you can click the middle mouse button on one of the completions to select it. If you have a two-button mouse, such as some MS Windows systems, you can click both buttons simultaneously to simulate the middle button. The right mouse button brings up a popup menu, called a "context menu" because the contents vary depending on what context you're in, such as the mode of the window you click in or the text under the mouse. The menu usually contains the commands most relevant to where you clicked, so they're easier to access. >> Press the right mouse button now. Under X Windows, you may have to hold the button down in order to keep the menu up. * FILES ------- In order to make the text you edit permanent, you must put it in a file. Otherwise, it will go away when your invocation of XEmacs goes away. In order to put your text in a file, you must "find" the file before you enter the text. (This is also called "visiting" the file.) Finding a file means that you see the contents of the file within XEmacs. In many ways, it is as if you were editing the file itself. However, the changes you make using XEmacs do not become permanent until you "save" the file. This is so you can avoid leaving a half-changed file on the system when you do not want to. Even when you save, XEmacs leaves the original file under a changed name in case you later decide that your changes were a mistake. If you look near the bottom of the frame you will see a line that begins and ends with dashes, and contains the string "XEmacs: TUTORIAL" or something like that. This part of the frame normally shows the name of the file that you are visiting. Right now, you are visiting a file called "TUTORIAL" which is your personal scratch copy of the XEmacs tutorial. When you find a file with XEmacs, that file's name will appear in that precise spot. One special thing about the command for finding a file is that you have to say what file name you want. We say the command "reads an argument from the terminal" (in this case, the argument is the name of the file). After you type the command C-x C-f Find a file XEmacs asks you to type the file name. The file name you type appears on the bottom line of the frame. The bottom line is called the minibuffer when it is used for this sort of input. You can use ordinary XEmacs editing commands to edit the file name. While you are entering the file name (or any minibuffer input), you can cancel the command with C-g. >> Type C-x C-f, then type C-g. This cancels the minibuffer, and also cancels the C-x C-f command that was using the minibuffer. So you do not find any file. When you have finished entering the file name, type <Return> to terminate it. Then C-x C-f command goes to work, and finds the file you chose. The minibuffer disappears when the C-x C-f command is finished. In a little while the file contents appear on the screen, and you can edit the contents. When you wish to make your changes permanent, type the command C-x C-s Save the file This copies the text within XEmacs into the file. The first time you do this, XEmacs renames the original file to a new name so that it is not lost. The new name is made by adding "~" to the end of the original file's name. When saving is finished, XEmacs displays the name of the file written. You should save fairly often, so that you will not lose very much work if the system should crash. >> Type C-x C-s, saving your copy of the tutorial. This should show "Wrote ...TUTORIAL" at the bottom of the frame. NOTE: On some older TTY connections, typing C-s will freeze the screen and you will see no further output from XEmacs. This indicates that an operating system "feature" called "flow control" is intercepting the C-s and not letting it get through to XEmacs. To unfreeze the screen, type C-q. Then see the section "Spontaneous Entry to Incremental Search" in the XEmacs manual for advice on dealing with this "feature". You can find an existing file, to view it or edit it. You can also find a file which does not already exist. This is the way to create a file with XEmacs: find the file, which will start out empty, and then begin inserting the text for the file. When you ask to "save" the file, XEmacs will really create the file with the text that you have inserted. From then on, you can consider yourself to be editing an already existing file. * BUFFERS --------- If you find a second file with C-x C-f, the first file remains inside XEmacs. You can switch back to it by finding it again with C-x C-f. This way you can get quite a number of files inside XEmacs. >> Create a file named "foo" by typing C-x C-f foo <Return>. Then insert some text, edit it, and save "foo" by typing C-x C-s. Finally, type C-x C-f TUTORIAL <Return> to come back to the tutorial. XEmacs stores each file's text inside an object called a "buffer". Finding a file makes a new buffer inside XEmacs. To see a list of the buffers that currently exist in your XEmacs job, type C-x C-b List buffers >> Try C-x C-b now. See how each buffer has a name, and it may also have a file name for the file whose contents it holds. Some buffers do not correspond to files. For example, the buffer named "*Buffer List*" does not have any file. It is the buffer which contains the buffer list that was made by C-x C-b. ANY text you see in an XEmacs window is always part of some buffer. >> Type ESC ESC to get rid of the buffer list. (Remember, three ESC's under TTY's.) If you make changes to the text of one file, then find another file, this does not save the first file. Its changes remain inside XEmacs, in that file's buffer. The creation or editing of the second file's buffer has no effect on the first file's buffer. This is very useful, but it also means that you need a convenient way to save the first file's buffer. It would be a nuisance to have to switch back to it with C-x C-f in order to save it with C-x C-s. So we have C-x s Save some buffers C-x s asks you about each buffer which contains changes that you have not saved. It asks you, for each such buffer, whether to save the buffer. >> Insert a line of text, then type C-x s. It should ask you whether to save the buffer named TUTORIAL. Answer yes to the question by typing "y". * EXTENDING THE COMMAND SET --------------------------- There are many, many more XEmacs commands than could possibly be put on all the control and meta characters. XEmacs gets around this with the X (eXtend) command. This comes in two flavors: C-x Character eXtend. Followed by one character. M-x Named command eXtend. Followed by a long name. These are commands that are generally useful but used less than the commands you have already learned about. You have already seen two of them: the file commands C-x C-f to Find and C-x C-s to Save. Another example is the command to end the XEmacs session--this is the command C-x C-c. (Do not worry about losing changes you have made; C-x C-c offers to save each changed file before it kills the XEmacs.) If you have installed the sample init.el file (we highly recommend this, once you've gotten some familiarity with XEmacs; see "Help->Samples->View Sample init.el"), you will find that C-x C-c does not exit XEmacs, but instead outputs a message. This is intentional, since C-x C-c is easy to hit accidentally. Instead, use the "File->Exit XEmacs" menu item to exit. If you are on a TTY, and you want to exit temporarily to execute a shell command, you should use C-z instead of C-x C-c. Under TTY's, C-z "suspends" XEmacs; that is, it returns to the shell but does not destroy the XEmacs. In the most common shells, you can resume XEmacs with the `fg' command or with `%xemacs'. (On systems which do not implement suspending, C-z creates a subshell running under XEmacs to give you the chance to run other programs and return to XEmacs afterward; it does not truly "exit" from XEmacs. In this case, the shell command `exit' is the usual way to get back to XEmacs from the subshell.) There are many C-x commands. Here is a list of the ones you have learned: C-x C-f Find file. C-x C-s Save file. C-x C-b List buffers. C-x C-c Quit XEmacs. C-x 0 Delete the current window. C-x u Undo (TTY version). Named eXtended commands are commands which are used even less frequently, or commands which are used only in certain modes. An example is the command replace-string, which globally replaces one string with another. When you type M-x, XEmacs prompts you at the bottom of the frame with M-x and you should type the name of the command; in this case, "replace-string". Just type "repl s<Tab>" and XEmacs will complete the name. (<Tab> is the Tab key, usually found above the CapsLock or Shift key near the left edge of the keyboard.) End the command name with <Return>. The replace-string command requires two arguments--the string to be replaced, and the string to replace it with. You must end each argument with <Return>. >> Move the cursor to the blank line two lines below this one. Then type M-x repl s<Return>changed<Return>altered<Return>. Notice how this line has changed: you've replaced the word c-h-a-n-g-e-d with "altered" wherever it occurred, after the initial position of the cursor. * AUTO SAVE ----------- When you have made changes in a file, but you have not saved them yet, they could be lost if your computer crashes. To protect you from this, XEmacs periodically writes an "auto save" file for each file that you are editing. The auto save file name has a # at the beginning and the end; for example, if your file is named "hello.c", its auto save file's name is usually "#hello.c#". When you save the file in the normal way, XEmacs deletes its auto save file. If the computer crashes, you can recover your auto-saved editing by finding the file normally (the file you were editing, not the auto save file) and then typing M-x recover file<Return>. When it asks for confirmation, type yes<Return> to go ahead and recover the auto-save data. * ECHO AREA ----------- If XEmacs sees that you are typing multicharacter commands slowly, it shows them to you at the bottom of the frame in an area called the "echo area". The echo area contains the bottom line of the frame. * MODELINE ---------- The line immediately above the echo area it is called the "modeline". The mode line says something like this: --**-XEmacs: TUTORIAL (Fundamental)--L670--58%---------------- This line gives useful information about the status of XEmacs and the text you are editing. You already know what the filename means--it is the file you have found. -NN%-- indicates your current position in the text; it means that NN percent of the text is above the top of the window. If the top of the file is on the screen, it will say --Top-- instead of --00%--. If the bottom of the text is on the screen, it will say --Bot--. If you are looking at text so small that all of it fits on the screen, the mode line says --All--. The L and digits indicate position in another way: they give the current line number of point. The stars near the front mean that you have made changes to the text. Right after you visit or save a file, that part of the mode line shows no stars, just dashes. The part of the mode line inside the parentheses is to tell you what editing modes you are in. The default mode is Fundamental which is what you are using now. It is an example of a "major mode". XEmacs has many different major modes. Some of them are meant for editing different languages and/or kinds of text, such as Lisp mode, Text mode, etc. At any time one and only one major mode is active, and its name can always be found in the mode line just where "Fundamental" is now. Each major mode makes a few commands behave differently. For example, there are commands for creating comments in a program, and since each programming language has a different idea of what a comment should look like, each major mode has to insert comments differently. Each major mode is the name of an extended command, which is how you can switch to that mode. For example, M-x fundamental-mode is a command to switch to Fundamental mode. If you are going to be editing English text, such as this file, you should probably use Text Mode. >> Type M-x text-mode<Return>. Don't worry, none of the XEmacs commands you have learned changes in any great way. But you can observe that C-<Right> and C-<Left> now treat apostrophes as part of words. Previously, in Fundamental mode, C-<Right> and C-<Left> treated apostrophes as word-separators. Major modes usually make subtle changes like that one: most commands do "the same job" in each major mode, but they work a little bit differently. To view documentation on your current major mode, type C-h m. >> Use M-4 C-l to bring this line near the top of the window. >> Type C-h m, to see how Text mode differs from Fundamental mode. >> Type q to remove the documentation from the screen. Major modes are called major because there are also minor modes. Minor modes are not alternatives to the major modes, just minor modifications of them. Each minor mode can be turned on or off by itself, independent of all other minor modes, and independent of your major mode. So you can use no minor modes, or one minor mode, or any combination of several minor modes. One minor mode which is very useful, especially for editing English text, is Auto Fill mode. When this mode is on, XEmacs breaks the line in between words automatically whenever you insert text and make a line that is too wide. You can turn Auto Fill mode on by doing M-x auto-fill-mode<Return>. When the mode is on, you can turn it off again by doing M-x auto-fill-mode<Return>. If the mode is off, this command turns it on, and if the mode is on, this command turns it off. We say that the command "toggles the mode". >> Type M-x auto-fill-mode<Return> now. Then insert a line of "asdf " over again until you see it divide into two lines. You must put in spaces between them because Auto Fill breaks lines only at spaces. The margin is usually set at 70 characters, but you can change it with the C-x f command. You should give the margin setting you want as a numeric argument. >> Type C-x f with an argument of 20. (M-20 C-x f). Then type in some text and see XEmacs fill lines of 20 characters with it. Then set the margin back to 70 using C-x f again. If you make changes in the middle of a paragraph, Auto Fill mode does not re-fill it for you. To re-fill the paragraph, type M-q (META-q) with the cursor inside that paragraph. >> Move the cursor into the previous paragraph and type M-q. * SEARCHING ----------- XEmacs can do searches for strings (these are groups of contiguous characters or words) either forward through the text or backward through it. Searching for a string is a cursor motion command; it moves the cursor to the next place where that string appears. The XEmacs search command is different from the search commands of most editors, in that it is "incremental". This means that the search happens while you type in the string to search for. The command to initiate a search is C-s for forward search, and C-r for reverse search. BUT WAIT! Don't try them now. When you type C-s you'll notice that the string "I-search" appears as a prompt in the echo area. This tells you that XEmacs is in what is called an incremental search waiting for you to type the thing that you want to search for. <Return> terminates a search. >> Now type C-s to start a search. SLOWLY, one letter at a time, type the word 'cursor', pausing after you type each character to notice what happens to the cursor. Now you have searched for "cursor", once. >> Type C-s again, to search for the next occurrence of "cursor". >> Now type <Backspace> four times and see how the cursor moves. >> Type <Return> to terminate the search. Did you see what happened? XEmacs, in an incremental search, tries to go to the occurrence of the string that you've typed out so far, highlighting it for your convenience. To go to the next occurrence of 'cursor' just type C-s again. If no such occurrence exists XEmacs beeps and tells you the search is currently "failing", C-g would also terminate the search. NOTE: On some older TTY connections, typing C-s will freeze the screen and you will see no further output from XEmacs. This indicates that an operating system "feature" called "flow control" is intercepting the C-s and not letting it get through to XEmacs. To unfreeze the screen, type C-q. Then see the section "Spontaneous Entry to Incremental Search" in the XEmacs manual for advice on dealing with this "feature". If you are in the middle of an incremental search and type <Backspace>, you'll notice that the last character in the search string is erased and the search backs up to the last place of the search. For instance, suppose you have typed "c", to search for the first occurrence of "c". Now if you type "u", the cursor will move to the first occurrence of "cu". Now type <Backspace>. This erases the "u" from the search string, and the cursor moves back to the first occurrence of "c". If you are in the middle of a search and type a control or meta character (with a few exceptions--characters that are special in a search, such as C-s and C-r), the search is terminated. The C-s starts a search that looks for any occurrence of the search string AFTER the current cursor position. If you want to search for something earlier in the text, type C-r instead. Everything that we have said about C-s also applies to C-r, except that the direction of the search is reversed. * MULTIPLE "WINDOWS" (I.E. PANES) --------------------------------- One of the nice features of XEmacs is that you can split the current frame (i.e. window-system window) into more than one pane, or "window" in XEmacs parlance. >> Move the cursor to this line and type M-0 C-l (that's zero, not Oh, and CONTROL-L, not CONTROL-1). >> Now type C-x 2 which splits the frame into two windows. Both windows display this tutorial. The cursor stays in the top window. >> Type M-<Next> to scroll the bottom window. (C-M-v on TTY's. If you do not have a real META key, type ESC C-v.) >> Type C-<Tab> to move the cursor to the bottom window. (Use C-x o -- "o" for "other" -- on TTY's.) >> Use <Next> and <Prior> in the bottom window to scroll it. Keep reading these directions in the top window. >> Type C-<Tab> again to move the cursor back to the top window. The cursor in the top window is just where it was before. You can keep using C-<Tab> to switch between the windows. Each window has its own cursor position, but only one window actually shows the cursor. All the ordinary editing commands apply to the window that the cursor is in. We call this the "selected window". If you have more than two windows, C-<Tab> cycles between them, and C-Sh-<Tab> (i.e. CONTROL-SHIFT-TAB) in the opposite direction. (There is no TTY equivalent for C-Sh-<Tab>.) The commands M-<Prior> and M-<Next> are very useful when you are editing text in one window and using the other window just for reference. You can keep the cursor always in the window where you are editing, and scroll forward or back through the other window with these commands. On TTY's, use C-M-v in place of M-<Next>, and there's no equivalent of M-<Prior>. C-M-v is an example of a CONTROL-META character. If you have a real META key, you can type C-M-v by holding down both CONTROL and META while typing v. It does not matter whether CONTROL or META "comes first," because both of these keys act by modifying the characters you type. If you do not have a real META key, and you use ESC instead, the order does matter: you must type ESC followed by CONTROL-v, because CONTROL-ESC v will not work. This is because ESC is a character in its own right, not a modifier key. >> Type C-x 1 (in the top window) to get rid of the bottom window. (If you had typed C-x 1 in the bottom window, that would get rid of the top one. Think of this command as "Keep just one window--the window I am already in.") You do not have to display the same buffer in both windows. If you use C-x C-f to find a file in one window, the other window does not change. You can find a file in each window independently. Here is another way to use two windows to display two different things: >> Type C-x 4 f followed by the name of one of your files. End with <Return>. See the specified file appear in the bottom window. The cursor goes there, too. >> Type C-<Tab> to go back to the top window, and C-x 1 to delete the bottom window. * MULTIPLE "FRAMES" (I.E. WINDOW-SYSTEM WINDOWS) ------------------------------------------------ On window systems, you can also create multiple "frames", or window-system windows. These exist independently of each other at the top level, just like separate programs. (There is no support for the MS Windows feature called MDI, or Multiple Document Interface, where multiple overlapping child windows exist inside of a single top-level window.) The commands for frames are similar to those for windows, but begin with "C-x 5". >> Type C-x 5 2 to create a new frame. >> Move the mouse into it, and click. (On X Windows, you may not need to click; this depends on the window manager.) >> Scroll up or down. Note that, just like for XEmacs windows, two frames can be showing the same buffer but in different positions. >> Type C-x 2. Note that each frame can have separate windows, independently of other frames. >> Type C-x 5 o (or Alt-Tab under MS Windows) to go back to the first frame. (That's a small Oh, for "other".) >> Type C-x 5 0 to kill the old frame. (That's a zero.) >> Note that we're still here! XEmacs will not exit until all frames are deleted, no matter what order they were created in. >> Type C-x 1 to get back to one window. You can also use C-x 5 f to open a file in a new frame, just like C-x 4 f opens a file in a new window in the same frame. * RECURSIVE EDITING LEVELS -------------------------- Sometimes you will get into what is called a "recursive editing level". This is indicated by square brackets in the mode line, surrounding the parentheses around the major mode name. For example, you might see [(Fundamental)] instead of (Fundamental). To get out of the recursive editing level, use the all-purpose escape mechanism mentioned earlier: ESC ESC. (Remember, it's ESC ESC ESC on TTY's.) You can also use it for eliminating extra windows, canceling a selection, and getting out of the minibuffer. >> Type M-x to get into a minibuffer; then type ESC ESC to get out. You cannot use C-g to get out of a recursive editing level. This is because C-g is used for canceling commands and arguments WITHIN the recursive editing level. * GETTING MORE HELP ------------------- In this tutorial we have tried to supply just enough information to get you started using XEmacs. There is so much available in XEmacs that it would be impossible to explain it all here. However, you may want to learn more about XEmacs since it has many other useful features. XEmacs provides commands for reading documentation about XEmacs commands. These "help" commands all start with the character CONTROL-h, which is called "the Help character". To use the Help features, type the C-h character, and then a character saying what kind of help you want. If you are REALLY lost, type C-h ? ? and XEmacs will tell you what kinds of help it can give. If you have typed C-h and decide you do not want any help, just type C-g to cancel it. (Note for TTY users: Some sites change the meaning of the character C-h. They really should not do this as a blanket measure for all users, so you have grounds to complain to the system administrator. Meanwhile, if C-h does not display a message about help at the bottom of the frame, try typing the F1 key or M-? instead.) The most basic HELP feature is C-h c. Type C-h, the character c, and a command character or sequence; then XEmacs displays a very brief description of the command. >> Type C-h c <Up>. The message should be something like up runs the command previous-line This tells you the "name of the function". Function names are used mainly for customizing and extending XEmacs. But since function names are chosen to indicate what the command does, they can serve also as very brief documentation--sufficient to remind you of commands you have already learned. Multi-character commands such as C-x C-s and <ESC>v are also allowed after C-h c. To get more information about a command, use C-h k instead of C-h c. >> Type C-h k <Up>. This displays the documentation of the function, as well as its name, in an XEmacs window. When you are finished reading the output, type q to get rid of the help text. Here are some other useful C-h options: C-h f Describe a function. You type in the name of the function. >> Try typing C-h f previous-line<Return>. This displays all the information XEmacs has about the function which implements the <Up> command. A similar command C-h v displays the documentation of variables whose values you can set to customize XEmacs behavior. You need to type in the name of the variable when XEmacs prompts for it. C-h a Hyper Apropos. Type in a keyword and XEmacs will list all the functions and variables whose names contain that keyword. For commands that can be invoked with META-x, an asterisk will be displayed to the left. >> Type C-h a newline<Return>. This displays a list of all functions and variables with "newline" in their names. Press <Return> or click the middle mouse button to find out more about a function or variable. Type `q' to exit hyper-apropos. C-h i Read On-line Manuals (a.k.a. Info). This command puts you into a special buffer called `*info*' where you can read on-line manuals for the XEmacs packages installed on your system. Type m xemacs <Return> to read the XEmacs manual. If you have never before used Info, type ? and XEmacs will take you on a guided tour of Info mode facilities. Once you are through with this tutorial, you should consult the XEmacs Info manual as your primary documentation. * CONCLUSION ------------ Remember, to exit XEmacs permanently use the menu item "File->Exit XEmacs", or type C-x C-c. On TTY's, to temporarily exit to a shell, so that you can come back in, use C-z. This tutorial is meant to be understandable to all new users, so if you found something unclear, don't sit and blame yourself - complain! COPYRIGHTS, COPYING, ORIGINS ---------------------------- Copyright (c) 1985, 1996, 2012 Free Software Foundation. Copyright (c) 2001 Ben Wing. This tutorial is synched with FSF 21.0.106. This tutorial descends from a long line of Emacs tutorials starting with the one written by Stuart Cracraft for the original Emacs. Ben Wing updated the tutorial for X Windows. Martin Buchholz and Hrvoje Niksic added more corrections for XEmacs. Ben Wing later synched up to FSF 21.0.105 and rehashed many sections to match the current XEmacs norms. This version of the tutorial, like XEmacs, is copyrighted, and comes with permission to distribute copies on certain conditions: Permission is granted to anyone to make or distribute verbatim copies of this document as received, in any medium, provided that the copyright notice and permission notice are preserved, and that the distributor grants the recipient permission for further redistribution as permitted by this notice. Permission is granted to distribute modified versions of this document, or of portions of it, under the above conditions, provided also that they carry prominent notices stating who last altered them. The conditions for copying XEmacs itself are more complex, but in the same spirit. Please read the file COPYING and then do give copies of XEmacs to your friends. Help stamp out software obstructionism ("ownership") by using, writing, and sharing free software!