DECOM—Origin Mode

This control function sets the origin for the cursor. DECOM determines if the cursor position is restricted to inside the page margins. When you power up or reset the terminal, you reset origin mode.

Default: Origin is at the upper-left of the screen, independent of margins.

Format

CSI
9/11
?
3/15
6
3/6
h
6/8
Set: within margins.
CSI
9/11
?
3/15
6
3/6
l
6/12
Reset: upper-left corner.

Description

When DECOM is set, the home cursor position is at the upper-left corner of the screen, within the margins. The starting point for line numbers depends on the current top margin setting. The cursor cannot move outside of the margins.

When DECOM is reset, the home cursor position is at the upper-left corner of the screen. The starting point for line numbers is independent of the margins. The cursor can move outside of the margins.

DECOSCNM—Set/Reset Overscan Mode

Sets or resets overscan mode.

Default: Overscan disabled (reset).

Format

CSI
9/11
?
3/15
1
3/1
0
3/0
6
3/6
h
6/8
Enable overscan
CSI
9/11
?
3/15
1
3/1
0
3/0
6
3/6
l
6/12
Disable overscan (Default)

Description

When set, overscan is enabled.

Overscan and 72 Hz refresh rate cannot co-exist when the terminal is set to 42 or 53 lines per screen. Refer to DECSNLS—Set Lines Per Screen for details.