HAR3P                                                      Menu:(HELPL) ADHLP
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Creates a help-line arc given three points along its perimeter.
(A loop nested command.)

  1.* (POINT) first point of arc, <ENTER>-to exit command
  2.* (POINT) second point of arc
  3.* (POINT) third point of arc

Description:
This command creates a help-line arc, given three points. Pick three
points in succession: the first point is the starting point of the
arc, the second is a point anywhere on the arc, and the third is the
end point. A help-line arc passing through the three points will then
be created (see \ar3p).

You may create additional help-line arcs until you select another
command or press <ENTER> to return to the previous command.

NOTE:The three points define the plane on which the arc is created; they must
not lie on a straight line. To create a help-line circle, use the \hcirc or
\harcc, command, or use \har3p twice.
