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Epsilon User's Manual and Reference
   . . .
   Commands by Topic
      Getting Help
      Moving Around
      Changing Text
      . . .
      Miscellaneous
   Command Reference
      . . .
      change-modified
      change-name
      change-read-only
      change-show-spaces
      clean-customizations
      . . .
   Variable Reference
      abort-file-io
      abort-file-matching
      abort-key
      . . .
      yank-rectangle-to-corner
   . . .

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Epsilon User's Manual and Reference > Command Reference >

change-read-only

Change the read-only status of the buffer.  Ctrl-X Ctrl-Q

This command changes the read-only status of the buffer. Attempting to modify a read-only buffer results in an error message. If a window contains a read-only buffer, the modeline contains the letters "RO". With no numeric argument, the command toggles the read-only status of the buffer. With a non-zero numeric argument, the buffer becomes read-only; otherwise, the buffer becomes changeable. Also see the change-file-read-only command.

More info:

Read-Only Files



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