window toplines [<lines>]

This operation reserves <lines> nonscrollable lines at the top of a window's display for display of the window's toplines.

Each window has 9 toplines, so <lines> must be 0 to 9. You are permitted to change any window topline at any time, even if the topline is not visible.

Toplines are often used for topic bars, or for showing vital stats about the window's current channel that should remain static on the display.

This operation first appeared in EPIC5-0.0.3