Will Quest 5 be able to save as a z-code file type? If it is,
If it isn't, can you try to add an option in the to save as (or export as) a z-code (.z#) file?

Wow, that's quite a big feature request!

I have no plans to do this as it would involve writing a compiler, which would be a huge undertaking. If somebody else wants to do this then I'd be delighted - I'd happily make it part of the main Quest product. But as it is I have neither the time nor the skills to do this myself!

Haha, thanks for the reply.

Something else that should be mentioned is that many languages and users are gravitating from Z-Machine to Plotkin's Glulx virtual machine.

http://en.wikipedia.org/wiki/Glulx

Rather than target Zcode or Glulx directly, generate Inform 6 code and pass it to Inform.