Insert/Replace Mode (IRM) is a mode that determines whether characters are
inserted or replaced when typed.
When enabled, characters are inserted at the cursor position pushing the
characters to the right. When disabled, characters replace the character at
the cursor position.
Insert/Replace Mode (IRM) is a mode that determines whether characters are inserted or replaced when typed.
When enabled, characters are inserted at the cursor position pushing the characters to the right. When disabled, characters replace the character at the cursor position.