Advance
Written Alphabet
What is a society but the sum of its legacy? A written alphabet, therefore, is but the first step towards immortalizing our culture, as well as the foundation of building an educated, well-functioning society.
Advance tree
The root of a tree in 
Traditions.
Modifiers
Max Literacy+5%
Monthly Literacy+0.01%
Definitionin_game/common/advances/0_age_of_traditions.txt:4
6icon = abacus_advance
7depth = 0
8research_cost = 2.0
14starting_technology_level = 2