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Diff for /src/usr.bin/mg/tutorial between version 1.12 and 1.13

version 1.12, 2013/02/10 15:38:18 version 1.13, 2013/05/17 20:35:49
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 often. When you save a file, mg saves a backup of the file with a tilde (~)  often. When you save a file, mg saves a backup of the file with a tilde (~)
 character at the end.  character at the end.
   
 Windows  Working with Buffers and Windows
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 The mg editor can support several windows at the same time, each one displaying  Once a file is loaded into mg, it is often referred to as a buffer.
 different text. To split a screen into two horizontal windows use C-x 2 to do  
 this. To return to one window, use C-x 1 to close the other windows and only  
 keep the current window.  
   
   The mg editor is capable of editing multiple buffers at the same time. When you
   open a second file with C-x C-f, the first buffer is still being edited by mg.
   
   Both buffers can be viewed simultaneously because mg can support several windows
   at the same time, each one displaying different text. To split a screen into two
   horizontal windows use C-x 2. To return to one window, use C-x 1 to close the
   other windows and only keep the current window.
   
 >> Use C-x 2 to split the screen into two windows.  >> Use C-x 2 to split the screen into two windows.
   
 >> Use C-x o to move from one window to the other. You can scroll up and down  >> Use C-x o to move from one window to the other. You can scroll up and down
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 >> Use C-x 1 to restore back to one window.  >> Use C-x 1 to restore back to one window.
   
 Buffers  
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 The mg editor is capable of editing multiple files at the same time. When you  
 open a second file with C-x C-f, the first file is still being edited by mg.  
 You can list all the buffers that are opened by mg by typing C-x C-b. The  You can list all the buffers that are opened by mg by typing C-x C-b. The
 screen should divide into two and the top window will list the buffers that  screen should divide into two and the top window will list the buffers that
 are currently open. Use C-x o to switch to the top window (we already learned  are currently open. Use C-x o to switch to the top window, then use the arrow
 this key combination above in the Windows section) and then use the arrow keys  keys to move to the buffer you wish to switch to, and then type the Enter key to
 to move to the buffer you wish to switch to and then type the Enter key to  
 select that buffer. Then use C-x 1 to switch back to only one window.  select that buffer. Then use C-x 1 to switch back to only one window.
   
 You may also move back to the last opened buffer by using C-x b to toggle back  You may also move back to the last opened buffer by using C-x b to toggle back
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 >> Use C-x C-f to open a new file  >> Use C-x C-f to open a new file
 >> Use C-x b to switch back and forth between that buffer and this one.  >> Use C-x b to switch back and forth between that buffer and this one.
   
 To edit files in multiple windows, use C-x 2 to split the screen into two  
 windows. Then use C-x C-f to open a new file in one of the two windows. You  
 can then switch between the two windows using C-x o. You can switch between  
 buffers in any window using C-x b. To go back to one window, use C-x 1.  
   
 To kill any buffer, use C-x k. You will be prompted for the buffer to kill.  To kill any buffer, use C-x k. You will be prompted for the buffer to kill.
 By default, the current buffer is selected as the one to kill. You may also  By default, the current buffer is selected as the one to kill. You may also
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