By parameters I mean the what sort of data do we expect to be in the table and what data do we know to be in the table?
At the tables most basic form we know it contains the values for the sethealingplace command and a pointer to either where it figures it out, or a command that sets the warp data.
As for my experience in searching through ROM data, I know most of the theory but I normally rely on logging and breakpoints rather than a manual search.