<previousfact rootid="123456.0" style="color: red; text-decoration: underline;"/>

The tag creates a link to the previous fact according to the order of the facts in the structure list in the folder.

The parameter rootid and the style are optional. If you don't specify a factid for the rootid, then the previous fact will be always taken from the current folder. 

Specifying the factID of the current folder in the rootid parameter makes it possible to go in subfolders.

You can use this tag only in html mode and at the very beginning of the html text you should type <advancedparser/>!