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.
Changes related to "Booting Into PC-BSD®/9.2"
26 January 2015
01:38(Deletion log) Tigersharke restored page PC-BSD® Users Handbook/9.2 (7 revisions restored: didn't intend to remove, only shock the system)