window unclear

This performs the inverse operation of window clear. The contents of the window are shifted down so any empty space at the bottom of the window is eliminated, and the next line of output causes the window to scroll.

Obviously if there is less than a windowfull of lines in the scrollback, then the window cannot be completely uncleared, but the window contents are shifted down so the entire scrollback is visible.

The window unclear feature first appeared in EPIC4pre1.038.