File Browsing mode :
|The Tree : acts like a normal browsing tree.Expand/Collapse/Select Folders ...
The List : shows the contents of the current selected folder.
When a file is double-clicked in the List:
-if it is a .project file : the Dialog switches to Project Browsing mode.
-if it is a .macros file : the Dialog switches to Macros Browsing mode.
-if not : SciTE opens the file.