INSERT MODE

 Sets the mode of the current buffer to insert (as opposed to overstrike).

 o  With INSERT MODE, characters you type are inserted at the current
    position pushing existing text to the right of the cursor -- that is,
    toward the end of the line and, if necessary, down onto the next line.

 o  For editing text, the default is INSERT MODE.  The mode of the buffer
    is shown in the status line.

 o  For typing commands, the mode matches your terminal setting.

 Related topics:

    CHANGE MODE    OVERSTRIKE MODE