What is a Constraint-Loop?

A Constraint-Loop (labeled Constraints) is a list of the constraints that are between a set of sketch-elements.

If you add a Constraint between sketch-elements that are in different Constraint-Loops, they combine to give one Constraint-Loop.

For example:

•Add Horizontal Constraint to Line1 = Constraint Loop #1

•Add Horizontal Constraint to Line2 = Constraint Loop #2

•Add a Horizontal Constraint between a Point in Line 1 and a Point in Line 2 =  1 × Constraint Loop

Constraints and the Selection-Window

If you:

•Click a Line :

the Line shows in the Selection-Window

•SHIFT + Click a Line :

the Line AND any Constraints that have been added to the Line show in the Selection-Window.