Sorry for the inconvenience. Known Navigation header breakage, its being "rebuilt."
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.
(Sorry for the inconvenience)
Openbox is a highly configurable, next generation window manager with extensive standards support. It is the window manager used by LXDE but can also be run separately from LXDE.
Figure 5.8a provides a screenshot of ScrotWM running on a PC-BSD system:
Figure 5.8a: Openbox on a PC-BSD System