Causes selected lines to lie parallel to each other.

Button
Ribbon: Parametric tab
Geometric
panel
ParallelNot available on the ribbon
in the current workspace
Menu: Parametric
Geometric
Constraints
ParallelNot available in menus
in the current workspace
Toolbar: Geometric
Constraint
This command is equivalent to the Parallel option in GEOMCONSTRAINT.
Following are the valid constraint objects and points: