AT&T 6300 Programmer's Manual page 391

Syntax
x,y
paint
border
background
Remarks
PAINT
Statement
Paints an enclosed area on the screen with a
specified color (Graphics Mode only).
PAINT [STEP] (x,y)[,[paintH,[border]
[,background]]
are the coordinates, either absolute or relative, of a point
where painting is to begin. Painting should always start on
a non-border point.
is a numeric or string expression. If it is a numeric expression
in the range 0 to 3, it represents the color number to be used
for painting (see the COLOR graphics statement for the
current screen mode, for details). If it is a string expression
then 'tiling' is performed. Tiling is described in detail later
in this section.
is an integer expression in the range 0 to 3. It identifies the
border color of the figure to be filled.
is a string expression returning one character, used in
"paint tiling."
The PAINT statement will fill in an arbitrary
figure, with edges of border color with the
specified paint color. The paint color will
default to the graphics foreground color if not
given, and the border color defaults to the
paint color.
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