Documentool generates output as a Treepad file (.hjt), or as an XML file.
When you choose for the Treepad format, you need to download and install the free Treepad Viewer. Compare it with the Adobe Acrobat Reader when you want to scan a pdf document.
On the Treepad site, you can find some additional hjt conversion tools. We used already several times the pdf converter and the Treepad Html Export.
Extension Description Generated by Documentool Viewer
Treepad format Yes Treepad Viewer
eXtensible Markup Language Yes up to you, why not BI Publisher?
Acrobat No Acrobat Reader
The HyperText thing No your browser, with javascript enabled