[MlMt] Messages indicator next to mailbox category headings

[John Cooper]

What does it mean when a message indicator appears not next to a 
mailbox, but next to a mailbox category?

I have an indicator that displays 4 next to the MAILBOXES heading, next 
to the EXAMPLES heading, and next to the SOURCES heading. But there are 
no indicators next to any of the mailboxes or sub-mailboxes under 
SOURCES.

The Displayed Count setting for EXAMPLES is "Inherit." But I don't know 
what the Displayed Count setting for MAILBOXES or SOURCES is, or how to 
find it.