# SPDX-License-Identifier: BSD-3-Clause
# @(#)openmode    8.1 (Berkeley) 10/29/94

Open mode has the following special behaviors:

z, ^F, ^B:
        If count is not specified, it shall default to the window
        edit option - 2.

        Write lines from the edit buffer starting at:

                (the current line) - ((count - 2) / 2)

        until:

                (((count + 1) / 2) * 2) - 1

        lines, or the last line in the edit buffer has been written.  A
        line consisting of the smaller of the number of columns in the
        display divided by two or 40 ``-'' characters shall be written
        immediately before and after the specified is written.  These two
        lines shall count against the total number of lines to be written.
        A blank line shall be written after the last line is written.

        z, ^F and ^B all behave identically.

^D:     Display the next scroll value lines, change the current line.

^U:     Change the current line, do nothing else.

^E, ^Y: Do nothing.

^L:     Clear the screen and re-display the current line.

H, L, M:
        Move to the first nonblank of the current line and do nothing
        else.
