When I create a folder, i don't know how to delete ot rename it.
Any suggestions?
In the Mac operating system, renaming and deleting is not done in an
application's Open dialog.
Instead, navigate to the file in the Finder (or use Spotlight), and
rename (click the name and wait for the it to turn into an edit box) or
delete it (using CMD-delete, or File/Move to Trash) there
