Artifact 189a72faaa6193f6536afd670886693b418b0eb543c9b6a49a45dedb36bf1c0d:
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psl-1983/3-1/doc/nmode/nm-windows.ibm
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— Add Reduce 3.0 to the historical section of the archive, and some more
files relating to version sof PSL from the early 1980s. Thanks are due to
Paul McJones and Nelson Beebe for these, as well as to all the original
authors.git-svn-id: https://svn.code.sf.net/p/reduce-algebra/code/historical@5328 2bfe0521-f11c-4a00-b80e-6202646ff360 (user: arthurcnorman@users.sourceforge.net, size: 10235) [annotate] [blame] [check-ins using] [more...]
,MOD - R 44X (11 April 1983) <PSL.NMODE-DOC>NM-WINDOWS.ibm PLA 97_LAS 80 0_FIR 2_INT 1 6.0_TYP 160 163 162 193_INP 12 101_MAR 2 ,END ,PRO 201 OUT 160_202 OUT 163_203 OUT 162_204 OUT 193 205 INP 12 101_206 INP 12 102 ,END ,DEFINE UNIT SPACE FUNCTION ,END 201/NMODE Manual (Two Window Mode) Page 18-1 202/18. Two Window Mode 201/NMODE allows you to split the screen into two 202/windows 201/and use them to display parts of two files, or two parts of the same file. C-X 2 Start showing two windows. C-X 3 Show two windows but stay "in" the top one. C-X 1 Show only one window again. C-X O Switch to the Other window C-X E Exchange Windows C-X 4 Find buffer or file in other window. C-X ^ Make this window bigger. C-M-V Scroll the other window. In 202/two window 201/mode, the text display portion of the screen is divided into two parts called 202/windows201/, which display different pieces of text. The two windows can display two different files, or two parts of the same file. Only one of the windows is selected; that is the window which the cursor is in. Editing normally takes place in that window alone. To edit in the other window, you would give a special command to move the cursor to the other window, and then edit there. The command C-X 2 (203/two-windows-command201/) enters two-window mode. A second mode line appears across the middle of the screen, dividing the text display area into two halves. Window one, containing the same text as previously occupied the whole screen, fills the top half, while window two fills the bottom half. The cursor moves to window two. If this is your first entry to two-window mode, window two contains the output buffer OUTPUT. Otherwise, it contains the same text it held the last time you looked at it. If given an argument, the same buffer that previously occupied the whole screen will appear in the lower window as well. To return to viewing only one window, use the command C-X 1 (203/one-window-command201/). Window one expands to fill the whole screen, and window two disappears until the next C-X 2. C-U C-X 1 gets rid of window one and makes window two use the whole screen. Neither of these depends on which window the cursor is in when the command is given. While you are in two window mode you can use C-X O (203/other-window-command201/) to switch between the windows. After doing C-X 2, the cursor is in window two. Doing C-X O moves the cursor back to window one, to exactly where it was before the C-X 2. The difference between this and doing C-X 1 is that C-X O leaves window two visible on the screen. A second C-X O moves the cursor back into window two, to where it was before the first C-X O. And so on... While you are in two window mode you can also call C-X E (203/exchange-windows-command201/) , which exchanges the physical positions of the two windows. This leaves the cursor in the current window, and leaves the division of the screen unchanged, but it swaps the buffers displayed in the two portions of the screen. As a result it can change the portion of each buffer that is displayed. 201/Page 18-2 NMODE Manual (Two Window Mode) Often you will be editing one window while using the other just for reference. Then, the command C-M-V (203/scroll-other-window-command201/) is very useful. It scrolls the other window without switching to it and switching back. It scrolls the same way C-V does: with no argument, a whole screen up; with an argument, that many lines up (or down, for a negative argument). With just a minus sign (no digits) as an argument, C-M-V scrolls a whole screenful backwards (what M-V does). The C-X 3 (203/view-two-windows-command201/) command is like C-X 2 but leaves the cursor in window one. That is, it makes window two appear at the bottom of the screen but leaves the cursor where it was. C-X 2 is equivalent to C-X 3 C-X O. C-X 3 is equivalent to C-X 2 C-X O, but C-X 3 is much faster. Normally, the screen is divided evenly between the two windows. You can also redistribute screen space between the windows with the C-X ^ (203/grow-window-command201/) command. It makes the currently selected window get one line bigger, or as many lines as is specified with a numeric argument. With a negative argument, it makes the selected window smaller. Neither window can be squeezed to less than one line of visible text by C-X ^. Overly large arguments squeeze one window to a line of text, then stop. The allocation of space to the windows is remembered while you are in one window mode and the same allocation is used when you return to two window mode. The allocation changes only when you give a C-X ^ command. After leaving two-window mode, you can still use C-X O, but its meaning is different. Window two does not appear, but whatever was being shown in it appears, in window one (the whole screen). Whatever buffer used to be in window one is stuck, invisibly, into window two. Another C-X O reverses the effect of the first. For example, if window one shows buffer B and window two shows buffer OUTPUT (the usual case), and only window one is visible, then after a C-X O window one shows buffer OUTPUT and window two shows buffer B. 202/18.1 Multiple Windows and Multiple Buffers 201/Buffers can be selected independently in each window. The C-X B command selects a new buffer in whichever window the cursor is in. The other window's buffer does not change. Window two's buffer is remembered while you are in one window mode, and when you return to two window mode that same buffer reappears in window two. See Section 16 [Buffers], page 1. You can view one buffer in both windows. Give C-X 2 an argument as in C-U C-X 2 to go into two window mode, with both windows showing the buffer which used to be in window one alone. Although the same buffer appears in both windows, they have different values of point, so you can move around in window two while window one continues to show the same text. Then, having found in window two the place you wish to refer to, you can go back to window one with C-X O to make your changes. Finally you can do C-X 1 to make window two leave the screen. If you are already in two window mode, C-U C-X O switches windows carrying the buffer from the old window to the new one so that both windows show that buffer. 201/NMODE Manual (Multiple Windows and Multiple Buffers) Page 18-3 If you have the same buffer in both windows, you must beware of trying to visit a different file in one of the windows with C-X C-V, because if you bring a new file into this buffer, it will replace the old file in 203/both 201/windows. To view different files in the two windows again, you must switch buffers in one of the windows first (with C-X B or C-X C-F, perhaps). A convenient "combination" command for viewing something in the other window is C-X 4 (203/visit-in-other-window-command201/). With this command you can ask to see any specified buffer or file in the other window. Follow the C-X 4 with either B and a buffer name, F or C-F and a file name. This switches to the other window and finds there what you specified. If you were previously in one-window mode, two-window mode is entered. C-X 4 B is similar to to C-X 2 C-X B. C-X 4 F is similar to C-X 2 C-X C-F. The difference is one of efficiency, and also that C-X 4 works equally well if you are already using two windows.