cf409661_dAndCGIScripts___System___Wiki__Description
[Parameter] t [Default] generally set to current time, in seconds [Description] 
While the t parameter is not actively used by any scripts, it is used when building links to scripts such as edit, to ensure that each edit link is unique. This stops the browser from trying to use a cached reply from a previous call to the script.
CommandAndCGIScripts < System < Wiki