@node UsecasePOP
+@cindex POP3 replacement
+@cindex IMAP4 replacement
@section Lightweight fast POP3/IMAP4 replacement
-@ref{nncp-daemon} can be connected with @ref{nncp-caller} for a long
-time -- it can create TCP connection that lasts for many hours. When
-SMTP server receives mail, it will call @ref{nncp-exec} creating an
-outbound encrypted packet. Daemon checks outbound directory each second
-and immediately sends notification about undelivered packets to remote
-side, that also downloads it at once.
+@command{@ref{nncp-daemon}} can be connected with
+@command{@ref{nncp-caller}} for a long time -- it can create TCP
+connection that lasts for many hours. When SMTP server receives mail, it
+will call @command{@ref{nncp-exec}} creating an outbound encrypted
+packet. Daemon checks outbound directory each second and immediately
+sends notification about undelivered packets to remote side, that also
+downloads it at once.
There are only dozens of bytes notifying about incoming packets, dozens
of bytes telling to download those packets. Mail packets are compressed