## Undo feature

If you work with a .rt file which name is "name.rt", the program will create a directory "name.rtd", and will put some files in it. Inside there is the directory "editor" which contains files used by the scene editor. Inside there is a directory "UNDO". After every action RTED will put there a copy of the scene. This because the program can crash in every time so you will have you work save.