setTopBottomMargins (DECSTBM) sets the top and bottom margins for the scrolling region. The default is the entire screen.
Default is 1 and the bottom of the screen.
``` CSI Pt ; Pb r ```
https://vt100.net/docs/vt510-rm/DECSTBM.html
setTopBottomMargins (DECSTBM) sets the top and bottom margins for the scrolling region. The default is the entire screen.
Default is 1 and the bottom of the screen.