Unknown Shape Files

Is there a way to find out what object or style in a .dwg causes it to look for a particular shape file? Somehow a shape file that we obviously don't use has found its way into our template and I can't figure out what in the template needs it...

See this post:

http://rkmcswain.blogspot.com/2006/02/select-shape-file.html

Thanks McSwain. You rock.

Funny thing is, it's the linetype I thought it was in the beginning. I guess after I purged that linetype I didn't go back to purge the shape file expecting it to go away after purging said linetype. I never use shape files in my own linetypes. As a matter of fact I have never really used them at all except what might be preloaded or what I gather from other folks on the net. Thus my experience with them is very limited. An oldie like myself oughta know more about such a basic concept with acad.