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Epsilon User's Manual and Reference > Command Reference >

overwrite-mode

Enter/Exit overwrite mode.  <Ins>

This command changes the behavior of the normal-character command, causing it to insert characters into the buffer destructively, replacing the character after point. However, Epsilon will never overwrite a newline character, or overwrite another character with a newline character. This ensures proper behavior with respect to the ends of lines.

Without a numeric argument, the command toggles the state of overwrite mode. With a numeric argument of zero, the command disables overwrite mode. With a nonzero numeric argument, it turns overwrite mode on.

More info:

Inserting and Deleting



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