You are familiar with all exotic weapons common to your people.
Prerequisite: Base attack bonus +1.
Benefit: You can treat all the exotic weapons associated with your race as martial weapons rather than as exotic weapons. A weapon is treated as being associated with a race if the race’s name appears as part of the weapon’s name, such as the elven thinblade, the gnomish swordcatcher, or the dwarven urgrosh.
Normal: Without this feat, you must select the Exotic Weapon Proficiency feat (or have the appropriate weapon familiarity as a racial trait) to eliminate the nonproficiency penalty you take when wielding an exotic weapon associated with your race.
Special: A fighter may select Improved Weapon Familiarity as one of his fighter bonus feats.
Source: Complete Warrior, page 101. Also appears in Races of Stone, page 141. This version adds the example of the gnomish swordcatcher from the latter source to the former.