-The "to" parameter is the url to ping. The example shows how to ping
-another ikiwiki instance.
-
-The [[!cpan LWP]] perl module is used for pinging. Or the [[!cpan
-LWPx::ParanoidAgent]] perl module is used if available, for added security.
-Finally, the [[!cpan Crypt::SSLeay]] perl module is needed to support pinging