DECSCNM—Screen Mode: Light or Dark Screen

This control function selects a dark or light background on the screen.

Default: Dark background.

CSI
9/11

?
3/15

5
3/5

h
6/8

Set: reverse video.

CSI
9/11

?
3/15

5
3/5

l
6/12

Reset: normal display.

When DECSCNM is set, the screen displays dark characters on a light background.

When DECSCNM is reset, the screen displays light characters on a dark background.

Screen mode only effects how the data appears on the screen. DECSCNM does not change the data in page memory.