Creates vertical and horizontal construction lines on all endpoints of selected objects.
You specify the direction of the construction lines in a dialog box. This command recognizes appropriate objects (objects drawn on any AutoCAD layer and the mechanical layers AM_0, AM_1, AM_2, AM_2N, AM_3, AM_3N, AM_7 and AM_7N, by default) and ignores inappropriate objects.
The Automatic C-line Creation dialog box appears. You can set the type of construction lines.