Is there a way to create a perfectly vertical or perfectly horizontal arrow in WireFrameSketcher? I can't figure out how to do this, it always comes out at a slight angle which looks very strange.

Hi Lila,

I agree this is a limitation. I created Arrows stencil that should help:

Let me know if this works for you.

Lila, arrows were improved in the latest release. It's now possible to draw straight horizontal and vertical arrows: