AutoCAD ® commands defined by ObjectARX ® or AutoLISP ® applications are called externally defined. AutoLISP applications may need to access externally defined commands differently from the way they access built-in AutoLISP functions. Many externally defined commands have their own programming interfaces that allow AutoLISP applications to take advantage of their functionality.
Imports a 3D Studio (.3ds) file
Translates and rotates objects, allowing them to be aligned with other objects
Invokes the on-line geometry calculator and returns the value of the evaluated expression
Reflects selected objects about a user-specified plane
Rotates an object about an arbitrary 3D axis
Creates profile images of three-dimensional solids