6.4.1 Flow of commands used
CHACOL4 [28H 2CH] Character plane color setting command
WINCOL4 [28H 62H] Window color setting command
CHASQRE4 [28H 23H] Square drawing command
CHATRIPA4 [28H 2AH] Filled-in triangle drawing command
CHACIRC4 [28H 25H] Circle drawing command [top left]
CHACIRC4 [28H 25H] Circle drawing command [top right]
CHACIRC4 [28H 25H] Circle drawing command [bottom left]
CHACIRC4 [28H 25H] Circle drawing command [bottom right]
WINDOW4 [28H 61H] Window drawing command [top left]
WINDOW4 [28H 61H] Window drawing command [bottom right]
EXPONOFF4 [24H 30H] Pattern data ON/OFF command
WINCLR4 [28H 63H] Window clearing command