Title:  How do I use Pine's aggregate operations?

Question:
How do I use Pine's aggregate operations?

Answer:
Aggregate operations were introduced in Pine 3.90.  They give you the
ability to select all of the messages in the current folder that match
some specified criteria, and then to apply any of Pine's message
operations (i.e. Save, Export, Print, Forward, Reply, TakeAddr, Pipe,
Flag, Delete, Undelete) to the entire set of selected messages. 

The following commands constitute the "aggregate command set":

	"; Select" to select a set of messages
        "Z Zoom"   to change the Index to show only selected messages
        "A Apply"  to apply a command (e.g. Save) to all selected msgs

As is the case with most advanced Pine features, aggregate operations are
not enabled by default so that the basic "out of the box" Pine
configuration may remain as simple as possible.  To use this particular
capability, set the "enable-aggregate-command-set" feature via the MAIN
MENU Setup command (after Setup, choose Config). 

Message selection can be based on message numbers (as shown in the Folder 
Index), dates, status (e.g. New, Answered), or any part of the message text
(headers or body).  Selected messages are denoted by an "X" in the first
column of their FOLDER INDEX entry, unless the "show-selected-in-boldface"
feature has been chosen via the Setup/Config screen. 

Multiple selections are possible.  In this case, Select will prompt you 
to either Broaden or Narrow the selection, and then ask for the match 
criteria to do that.

In addition, when aggregate operations are enabled, the WhereIs command in
the FOLDER INDEX screen will have a new "^X Select Matches" sub-command. 
When you enter a match string at the WhereIs prompt and press ^X instead
of RETURN, every message in the folder whose Index listing includes the
match string will be selected. 

Finally, Pine has built-in help on all of the aggregate operations. Keep 
an eye out for it when you get confused or stuck.