Enables definition of graphics window, i.e. area of screen inside which graphics can be drawn with the DRAW
and PLOT
statements.
VDU 24,lx;by;rx;ty;
lx | Left X |
by | Bottom Y |
rx | Right X |
ty | Top Y |
Four coordinates given as two bytes each. Use of semi-colon punctuation sends number as two-byte pair: lo followed by hi.