# AG\_ATTRSUB

> [HTML Version](ag_attrsub.htm)

_Rewritten December 2023_

**tab(-10, AG\_ATTRSUB); attrtype, clrtype, fg'r, fg'g, fg'b, bg'r, bg'g, bg'b; chr(127);**     [Tab(-10,x) Syntax Notes](ag_xxx_syntax-notes.md)

AG\_ATTRSUB (68) allows for changing the reverse or underline attribute to an arbitrary foreground/background color combination. It is useful for slight aesthetic improvement to legacy text-mode programs which use reverse video and underline, which may seem excessively retro for some tastes.

**Parameters**

_attrtype_

Attribute type:  0=reverse, 1=underline 

_clrtype_

Type of color:  1=palette index, 2=RGB

_fg'r, fg'g, fg'b_

Foreground color. For _clrtype_ 1 (palette index), only fg'g and fg'b are ignored; fg'r is treated as the palette index (0-7 for foreground palette, 8-15 for reduced foreground). For _clrtype_ 2 (RGB), foreground red, green and blue RGB values. 

_bg'r, bg'g, bg'b_

Background color. For _clrtype_ 1 (palette index), only bg'g and bg'b are ignored; bg'r is treated as the palette index (0-7 for background palette, 8-15 for reduced foreground)

For _clrtype _2 (RGB), foreground red, green and blue RGB values. 

**Response**

None

**History**

2023 December, A-Shell 7.0.1752.2:   bg'r value was previously (incorrectly) indexing the foreground rather than background palette when clrtype=1.