It's a given that various organizations will unveil fancy graphics and images aimed at swaying public opinion on the so-called T-SPLOST, the regional transportation tax which voters will decide on July 31. Allow us to pass one along. Citizens for Progressive Transit, the self-explanatory advocacy group, has produced a handy chart that shows how road and transit projects funded by the sales tax measure would change metro Atlanta's existing system. (Here's a larger PDF version.) Feast on the data, friends, and learn all you can about the measure.