This evening I went through and added some empty, standard section headings and subheadings that were missing. I didn't browse every page listed in the OP, but I tended to about eight or ten pages, just adding the missing section headings.
I did add property names for a couple of the visited pages. Otherwise, I did not add any actual content. I also fixed the icons in the navigation menu for Feature Area and Feature Area Workplane.
Looks like we have a sizeable portion missing of descriptive and usage content. A number of the pages I visited are missing a practical screenshot. When I get time, I may go back and add some content where I can knowingly contribute worthwhile, accurate information - I haven't used many of the tools in the PathWB.
Thanks for allowing me to help with the greater FC project.