In Studio you can open class with typing / pasting full classname Ctrl+O dialogs filenamebox.
in Open Atelier Class/Routine Dialog (Ctrl+Shift+T) you can't give full class name (package.class) and
when typing only classname part it does not give you any hint about package of those classes it shows.
Its' a bit frustrating when we can have ( and we have) lot of classess named similarily in different packages
and we have lot of packages so the tree crawling is a bit slow.