---snip--- Hi Using the Postscript like concept, one would have a compactor word defined earlier in the file such that simple syntax like: EXPAND 512 E5 would be able to create a block of 512 E5's Of course one might want to keep a consistant radix like: EXPAND 200 E5 But that is not neccessary if the word EXPAND was first defined as such. Also such things as copy protection where a sector size has been changed on a track might be encoded as: SECTOR_SIZE 512 SECTOR_DATA 0 xxx..xxx SECTOR_SIZE 256 SECTOR_DATA 1 xx....xxx etc. The Archive file could include a simple glossary of the externally defined words that are in common use while still being internally extended to cover special cases. Dwight