The file being written must contain the following minimum configuration:
<Configuration>
<Properties />
</Configuration>
Enable this option to have the global configuration file to be cached, for better performance. It is a good idea to keep in mind that when you cache the global configuration file and then make changes to it, users will not see the changes until the cache expires.
Default: False
The amount of time in minutes to keep the cache before deleting it.
Default: 120
Default: empty
The properties you wish to be updated in the Global Configuration File. If this property is left empty, all properties will be stored.
Example:
<Properties>
<Property>Url To XML</Property>
<Property>Mapping XSL</Property>
</Properties>
When this property is enabled and global configuration has been enabled, any properties that are capable of being globally configured are automatically added to or updated in the configuration file when "OK" is clicked on the web part tool pane.
Default: True