When you edit a file in a project, the editor
is started in the work area if the work area is visible to the client. If
the specified file is not in a project or if the work area for the
project is not visible, the editor is started with a temporary read-only
copy of the file from the database.
Note: When you edit
a file in a copy-based work area, the corresponding database object
is not automatically updated with your changes. You must reconcile
your work area regularly after you edit and save a file.