remote | local blocks in protocol settings

[Nikolaos Milas]

Hello,

Where can I find detailed documentation on how "remote" & "local" blocks 
are used in protocol configuration to provide specific settings for 
particular IPs/Names?

I've been searching around (wiki2, Google) but I found very few things. 
I also checked in the conf.d directory of the installation and couldn't 
find anything.

One useful thread was here:

    http://www.dovecot.org/list/dovecot/2010-June/050069.html

where we can read about the "filter" hierarchy:

    protocol name {
       remote <ip|name> {
         local <ip|name> {

but I would really appreciate reading more complete documentation (and, 
hopefully, examples).

Thanks,
Nick