Literacy

Literacy is one of Fallout GURPS advantages. See: Fallout GURPS.

Overview
"The GM decides upon the norm for literacy in his campaign: Are most people literate, semi-literate or illiterate? Literacy is the norm in most high-tech settings, semi-literacy is usual in Renaissance and post-holocaust settings, and illiteracy is generally the default in lowtech and fantasy settings. Skip this section entirely in settings where there are no written languages!"

- Steve Jackson Games GURPS sources

In Fallout
With the abandonment of GURPS, Literacy was recycled, image used for Intelligence.