Inferencing displays relations by means of dotted inferencing lines, pointer display, and highlighted cues such as endpoints and midpoints.
Inferencing lines
Inferencing lines appear as you sketch, displaying relations between the pointer and existing sketch entities (or model geometry).
Pointer display
The pointer display indicates when the pointer is over a geometric relation (an intersection, for example), what tool is active (line or circle), and dimensions (angle and radius of an arc). If the pointer displays a relation (such as for a horizontal relation) and you click to accept the sketch entity while the relation is displayed, the relation is added automatically to the entity.
You can turn off automatic relations. Click .