Graphics Compatibility System (GCS). Primer on Computer Graphics Programming. Programmers Reference Manual (1978)
Defense Technical Information Center · leaf 288
CHARACTER CHAR* I CALL USTART CALL UOUTLN 1 CALL UGRXN CX.Y.CHAR) IF CCHAR .EQ. 'S') CALL UPENI CX,Y. 'LINEO IF CCHAR .EQ. '!') CALL UHOVE CX,Y3 IF CCHAR .EQ. ' D ') CALL UPENI CX, Y, 'DASH' > IF CCHAR .EO. 'E') GO TO 2 GO TO l 2 CALL UEND STOP END 73
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