The table of ROM link packages is stored in memory at &500, with the first byte being the total number of packages in use, less one. If it's &FF it means all packages have been killed. The next 16 bytes are the package table, with the low nibble of each byte being a package identifier, 2 for Inter-Word, and the high nibble being the package number. The next byte is unidentified at present, and there then follows 16 bytes of starting memory page associated with each package.