Mention ClientOnly default

svn:r4209

doc/tor.1.in

@@ -152,7 +152,8 @@ Where on our circuits should we allow Tor servers that the directory
 servers haven't authenticated as "verified"?  (Default: middle,rendezvous.)
 .TP
 \fBClientOnly \fR\fB0\fR|\fB1\fR\fP
-If set to 1, Tor will under no circumstances run as a server.  (Usually,
+If set to 1, Tor will under no circumstances run as a server. The default
+is to run as a client unless ORPort or DirPort is configured.  (Usually,
 you don't need to set this; Tor is pretty smart at figuring out whether
 you are reliable and high-bandwidth enough to be a good server.)
 .TP