The lines I want to draw would be "box joint" just like in routering (woodworking).
I figured how to make a single instance of a segment with a stencil, but how do I make a zipper out of it. So that I can quickly draw x sides of a box.
I figured the electronic waveform square wave would work, but that'll be lots of copy and paste as well.
There's a couple of articles that talk to this, here's one
http://www.visguy.com/2008/08/09/create-better-looking-more-efficient-smartshapes/
and this one
http://www.visguy.com/2008/03/03/release-the-power-of-visio-custom-line-patterns/
and here's a thread
http://visguy.com/vgforum/index.php?topic=3519.msg13714#msg13714
al