Itemtemplate is an additional parameter to the factinclude, which can be used to extract specific information from the fact that will be included. With the itemtemplate you can determine which parts of the included fact will be displayed and in what way. The itemtemplate itself is a separate fact that is written in HTML mode where you can set specific tags and CSS styles. When this template is applied to a factinclude all used tags in the html-code will be replaced with the corresponding data.
For further infromation, please see Create an itemtemplate and Customize the appearance of a fact with an itemtemplate .