1. A method of storing data results of simulation processing of a hardware description language (HDL) model based upon keywords, said method comprising: receiving result data obtained by simulation of at least one HDL model; receiving, in association with the result data, a plurality of value sets each indicating at least one keyword having an associated value, wherein each keyword identifies a parameter external to the HDL model that affected said result data; and storing said result data within a data storage subsystem in association with said plurality of value sets such that particular result data are attributable to particular ones of said plurality of value sets.