AT&T 6300 Programmer's Manual page 240

Gwbasic by microsoft
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DRAW
Statement
Mx,y
B
N
An
TAn
Cn
7-84
Move absolute or relative. If 'x' is preceded by a plus
(+)
or
minus (-), 'x' and 'y' are added to the current graphics
position, and connected with the current position by a line
(move relative). Otherwise, a line is drawn to point 'x,y' from
the current position (move absolute).
Move without plotting any points. B may precede any of the
above mentioned movement commands.
Move but return to original position when finished. N may
precede any of the above mentioned movement commands.
Further GML Commands
Set angle 'n'. On' may range from 0 to 3, where 0 is 0 degrees,
1 is 90, 2 is 180, and 3 is 270. Figures rotated 90 or 270 degrees
are scaled so that they will appear the same size as with 0 or
180 degrees on a monitor screen with the standard aspect
ratio of 4/3.
Rotate angle 'n'. On' is equivalent to degrees in the range -360
to 360. If 'n' is positive, rotation is counter-clockwise, if On' is
negative, rotation is clockwise. If on' is outside the specified
range, an "Illegal function call" error occurs.
Set color 'n' (from 0 to 3 in medium resolution, and 0 to 1 in
high or super resolution).

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