Stream pane is the main navigation pane. For a file, you can see there
the file's main (unnamed) stream, alternate streams if present, and
the file properties page.
Every file stream
is completely independent and maintains an independent editing history and
For logical and physical drives the Stream pane has a different layout:
the main and the only stream, several drive-specific views, and a properties page.
Unlike files, drives has only one stream representing the drive contents.
Views just display the appropriate parts of the main stream. A view does not
have an independent editing history; the one and only
belongs to the main stream.