用於繪製中心線和十字中心的指令
Commands
AMCENCRANGLE (指令)
AMCENCRCORNER (指令)
AMCENCRFULLCIRCLE (指令)
AMCENCRHOLE (指令)
AMCENCRINHOLE (指令)
AMCENCROSS (指令)
AMCENINBET (指令)
AMCENTLINE (指令)
System Variables
AMAUTOCL (系統變數)
AMCLCM (系統變數)
AMCLGAP (系統變數)
AMCLOSHT (系統變數)
AMCR2SEG (系統變數)