RTL

RTL means Right to Left, it's a term used to describe the status of the interface when viewing it in a language like Arabic (right to left written langauge). The current status of RTL in Drupal core is to flip some CSS rules in your style files. The aim of this project is to make this fully automated. You create a theme or a module? no need to worry about RTL support, we will do that for you!

Some discussion:
Towards a better RTL solution