draw a line with arrows indicating direction of tavel...

[John Cole]

Hello,
  I'm trying to render a line and show the direction of travel (the points
in the lines are in the proper order).  Attempting to use a true type
symbol, and come to find it is working as designed :-)
http://mapserver.gis.umn.edu/docs/howto/cartosymbols/#signatures-of-type-tru
etype

  So, how do I go about rendering an arrow at regular intervals along a line
and have them follow the direction of the points in the line?

Thanks,

John Cole
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