I managed to get a small test minigame converted to both Spectrum Next and +3 last night, but I did run into a few more issues.
First, the conversion kept failing with the error 'Word "CONVE" already defined'. This turned out to be because I had match statements for both 'convert code' and 'read conversion'. I tried a few synonyms (e.g. 'translate code' and 'read translation') and kept getting the same error (e.g. 'Word "TRANS" already defined'), so I'm not really sure how to avoid this other than rephrasing things and possibly having to leave out certain matches.
Secondly, quiet="true" doesn't seem to work - is that correct? I can live with the default message appearing alongside any custom 'get' messages I've programmed, but less so with the custom message being 'you now have pen' when I've programmed it in Adventuron as 'pen : object "a pen"'. Is there a way to get the message to display the article? Either 'a' or 'the' would be fine.
Finally, vocabulary aliases don't seem to work - is that correct? Not a problem if so, just wanted to check.