l ! _Line
pl ! _Polyline
c ! _Circle
rec ! _Rectangle
a ! _Arc
m ! _Move
co ! _Copy
ro ! _Rotate
sc ! _Scale
tr ! _Trim
ex ! _Extend
o ! _Offset
j ! _Join
x ! _Explode
ext ! _ExtrudeCrv
box ! _Box
bd ! _BooleanDifference
bu ! _BooleanUnion
za ! _Zoom _All _Extents
s ! _Show
h ! _Hide