The documentation for the Extrude Along Path command misses out lots of info, as far as I can see.   http://app-help.vectorworks.net/2018/eng/VW2018_Guide/Objects_edit2/Extrude_Along_Path.htm   I'm always wary of this tool, because I never quite understand what it's doing. Sometimes I'll use it and it'll do what I want, sometimes it won't. Here are some basic questions that don't seem to answered in the VW help guides.   1. In what plane can I draw the profile objec