Understanding Work Period Report

I am trying to understand the make up and meaning of different fields reported on a work period reports. I would like to build a query from exported data to duplicate the work period report but do not know which tables ,etc. to use. Is it possible to export in .csv format the work period report which would help until we move forward probably to Version 5?

No you can’t but you can install version 5 and use the trial period. The v5 report is customizable via report tags. Version 4 the report is hard coded.