用於隱藏線和描影 3D 物件的指令
Commands
HIDE (指令)
HLSETTINGS (指令)
MVIEW (指令)
PAGESETUP (指令)
REGEN (指令)
SHADEMODE (指令)
System Variables
HALOGAP (系統變數)
HIDEPRECISION (系統變數)
HIDETEXT (系統變數)
INTERSECTIONCOLOR (系統變數)
INTERSECTIONDISPLAY (系統變數)
OBSCUREDCOLOR (系統變數)
SHADEDGE (系統變數)
SHADEDIF (系統變數)
OBSCUREDLTYPE (系統變數)