I played with EQ7 and reverse engineered some instructions for the "megablock" (which consists of 64 squares/HSTs). I had noticed that each megablock consists of four 4x4 squares/HSTs, which are all constructed alike.
The megablocks are separated by sashing. If anyone is willing to work with my rudimentary instructions I'd be glad to post them, even with the EQ7 drawings. Or you can PM me.