The Virtual Mailbox Window

	The Virtual Mailbox Window shows a list of all the mailboxes
and filters which reside in the Main Window which controls it. Each
Main Window (and Virtual Mailbox Window) has a number in the title to
let you wknow which belong together. You may have multiple copies of
each running at the same time; each controlling different mailboxes
or filters.

	Every mailbox contains a default filter called "ALL", which
contains all messages in that mailbox. If you apply an "active" filter
to the mailbox, you will also see the name of the active filter, and
another filter called "UNFILTERED", which is used to hold any messages
which didn't apply to any of your active filters.
	
	Selecting an item in this list (single click) updates the Main
Window immediately with the selected filter.

	The format of the list entries is:

1. The number of messages in the filter

2. The filter level, indicate by successive ">" characters.  Every
filter has a "parent", except the main mailbox (ALL), which is its own
parent. The filter levels indicate which filter is a subset of
another, and you may nest them to arbitrary depths.

3. The filter name

4. The mailbox name, (and server, if applicable).

	If the list item is presented in BOLD font, the filter
contains "new" messages. If the list item is presented in ITALIC font,
it represents a "dormant" or one-time search filter which will not be
continuously updated. A dormant filter which has new messages is
identified consequently by an entry which is BOLD and ITALIC.

Dismiss
	Close the Virtual Mailboxes Window. This has no effect on any
open mailboxes or attached filters.
	
Save
	Save all the currently applied active filters for each open
mailbox in the window. These will automatically be loaded the next
time you open the mailbox.

Filters
	This brings up the Filter Editor, where you may define or
manage your filter collection.

Detach
	The currently selected filter will be "detached" from the
mailbox which contains it. If the selected filter is "ALL", the
mailbox will be closed, and all other filters for that mailbox
detached.

Hide
	This is a toggle selection, which changes the display to show
either all of your attached filters, or only those which have messages
in them.