Sorry for the inconvenience.  Known Navigation header breakage.
There may be other unforeseen breakage primarily in the handbook portion of the wiki.
The Table Of Contents section of each "PC-BSD® Users Handbook" page may be the best workaround.

PDF Export - Error

Jump to: navigation, search
No PDF Conversion software could be found. Please install either PrinceXML, DomPdf, or HTMLDoc.
Personal tools
Namespaces

Variants
Views
Actions
Navigation
Toolbox