I promised you a short discussion of tailoring PHYZZX into your own inimitable macro package. The simplest way to do this is to have a complicated file called MYPHYX TEX on your A disk. If there are a few features of PHYZZX which do almost what you want, but not quite, you can look at the file PHYZZX TEX. By reading Knuth and studying this file you will see how everything PHYZZX does is made to happen. The way to change something is to steal the relevant definition from this file and copy it to your MYPHYX file. Then, make the changes which you wish to make. Since PHYZZX inputs this file after it makes its own definitions, you desires will override the PHYZZX definitions.
GOOD LUCK !!!!!