In the figure you see
center blips,
solid grip handles and
open grip handles for selected objects of diverse type.
Note that the Cursor will change to an arrow cursor when you move it on top of a blip or
grip handle.
The functions of grips and blips are discussed in the Reshape mode, Translate mode and various draw mode subsections. Not all grip handles will be present for objects with locks (see Locking).
Methods
CADGetLock, CADSetLock, CADGetObjLock, CADSetObjLock.