Now that the Professional Service Tools Library is free there is a lot of interest in the various tools. But if you want more information about a tool where to you? Certainly there has been coverage in various Dynamics GP blogs including this one but not every tool is covered in detail. You might be tempted to open the tools and hit F1 for help. Alas nothing happens.
There is no help file for the PSTL utilities but there is a very good manual. It installs by default in C:\Program Files (x86)\Microsoft Dynamics\GP2010\ProfServicesToolsLibrary.pdf and it's really a very good base reference for the tools.