Allegro 5.0 - Lab for Arcs with Angle Lock Off

   The purpose of this lab is to become familiar with creating lines with 90-degree arc segments.  This will be accomplished by having the user(you) duplicating the given sample line displayed.

 1) Select  Add > Line  command.

 2) Set the following Ministatus parameters:

         Line Lock Direction:  Off
         Line Lock Mode:       Arc

 3) Pick points p1, then p2 on sample line. 

 4) Observe arc dynamics by moving cursor to different locations.

 5) Continue picking numbered points to duplicate sample line.

 6) Press <F1> to continue to next frame ...
