so display(1) works correctly when a command produces less output
than the previous one.
PR: 28405
Submitted by: Stephen Montgomery-Smith <stephen@cauchy.math.missouri.edu>
through curses(3X). The command can be compound and the delay
between executions is settable on the command line. The output
from the command had better fit on a single screen, of course.
PR: ports/4384
Submitted by: Stephen J. Roznowski <sjr@home.net>
