Graffiti Markup Language video

Graffiti Markup Language(.gml) is a universal, XML-based, open file format designed to store graffiti motion data (x coordinates, y coordinates and time). The format is designed to maximize readability and ease of implementation for even hobbyist programmers, artists and graffiti writers.

G.M.L. = Graffiti Markup Language (Overview) from Evan Roth on Vimeo.