PLB !Print library
STORE nb , GET nb ！To and from library
SAVE filename ，FETCH filename ！TO and from disk
SPEC ！ Lens specifications
PXT [P] ! Paraxial raytrace
MGI ! Menu ，geometric image
MDI ！ Menu ， diffraction image
MOP ！Menu，MTF options
RAY ！See the path of a ray
MPE ！Perspective drawing options
MWL ！Browse for a lens file
MWM ！Browse for a Macro (w-z~#<