RANDOMIZE USR issue

[boriel]

...well i dont' include any binary into the ZXB code. I just have a relocatable bin file for the compressed screen, and the compiled menu including the RANDOMIZE USR call.
I use to assemble the bin parts (game, relocatable sounds, compressed screens etc) in a final TAP file and all should go.

Still don't understand how do you do the last part: "Assemble the bin parts in a final tap". What exactly are you doing here?