Toolbar :

Part-Editor: Constraints toolbar

Menu :

Part-Editor: Add menu > Geometry sub-menu> > Constraints sub-menu > Add Horizontal

To add :

Click Add Horizontal Constraint, then click:

1.Two Points

- or -

1.A Line

Result :

•The two Points become Horizontal and parallel with the X-axis

- or -

•The Line becomes Horizontal and parallel with the X-axis

Notes :

You cannot this constraint between a:

•Line and a Point

•X–axis and a Point.

Do: Constraints toolbar > Add Coincident Constraint

To delete :

1.SHIFT+CLICK a sketch-element with a Horizontal Constraint

The sketch-element and Horizontal Constraint show in the Selection-Window.

2.Right-click the Horizontal Constraint element in the Selection-Window

3.Click Delete in the contextual-menu

A Line

The Line becomes Horizontal

HorizontalL

Two Points

The two Points become Horizontal

HorizontalPtoP