# AutoConstrain Tab (Constraint Settings Dialog Box)

Controls AutoConstrain settings on the constraint bar.

Controls the constraints that are applied to a selection set, and the order in which they are applied when using the AUTOCONSTRAIN command.

The following conditions are checked before multiple geometric constraints are applied:

• Are the objects perpendicular or tangential to each other within the tolerances specified in the AutoConstrain tab?
• Do they also intersect within the specified tolerances?

If the first condition is met, then tangent and perpendicular constraints are always applied if the check boxes are cleared.

If you select the additional check boxes, then the distance tolerance is considered for intersecting objects. If the objects do not intersect but the nearest distance between them is within the distance tolerance specified, then the constraint will be applied even if the check boxed are selected.

## List of Options

The following options are displayed.

• Priority — Controls the order in which constraints are applied.
• Constraint Type — Controls the type of constraint applied to objects.
• Apply — Controls the constraints that are applied when applying constraints to multiple objects.
Move Up

Changes the order of the selected item by moving it up in the list.

Move Down

Changes the order of the selected item by moving it down in the list.

Select All

Selects all geometric constraint types to autoconstrain.

Clear All

Clears all geometric constraint types to autoconstrain.

Reset

Resets AutoConstrain settings to default values.

Tangent Objects Must Share an Intersection Point

Specifies that two curves must share a common point (as specified within the distance tolerance) for the tangent constraint to be applied.

Perpendicular Objects Must Share an Intersection Point

Specifies that lines must intersect or the endpoint of one line must be coincident with the other line or endpoint of the line as specified within the distance tolerance.

Tolerances

Sets the acceptable tolerance values to determine whether a constraint can be applied.

• Distance — Distance tolerance are applied to coincident, concentric, tangent, and collinear constraints.
• Angle — Angular tolerance are applied to horizontal, vertical, parallel, perpendicular, tangent, and collinear constraints.