Managing the Wiki System Properties 
You can influence system behavior by setting system properties to the values required. You can manage the set of system properties available.
From the wiki administration console, choose .
In the navigation pane, choose System Properties.
Locate the system property and choose
(Edit) in the relevant line.
Edit the property value.
At the bottom of the System Properties page, locate the Add new propertysection.
Specify the name and the value of the new system property.
Locate the system property and choose
(Delete) in the relevant line.
Confirm the security prompt.