<factinclude latestchanges filterbyfolder="452701.0" count="3" />

 Includes the links of latest changed 3 facts from the folder with number 452701.0.

A more specific use is: 

<factinclude latestchanges filterbyfolder="1202889.0"  service="facts" /> 

Display only text facts from structure. 1202889.0 is a sample id and it should be replaced by the structure infoid of the current platform.