Pretty much what it says on the tin: APR bonuses for non-warriors with weapon specialization.
This very small mod takes advantage of the 1.3 patch and EE's externalization of CLSWPBON.2da to give proficiency-based APR bonuses to swashbucklers, Haer'Dalis, and any mod kits that can specialize in weapons. Warriors still get their inherent bonuses at levels 7 and 13. If you played the vanilla games with TobEx back in the day (or still do), this is modeled after the "Taimon's WSPATCK for all" component of the_Bigg's tweak pack.
This is EE-only; vanilla players can use the_Bigg's tweaks to get the same effect. Download it from here: