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.

Translations:Laptops/9.2/23/en

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hint.hpet.0.allowed_irqs="0x400000"                                  
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