by sheer chance I discovered that BASIC10 supports (at least with ROM 911001) some kind of 'edit mode'.
Edit mode is entered by issuing the EDIT ON command. The immediately noticeable effects of this are:
- prompt changes from "READY." to "OK."
- the BASIC tokenizer is disabled (keywords like 'PRINT' are not getting tokenized but inserted into program code as-is; also existing tokens in the program text are not resolved)
- RUN/LOAD/GOTO/GOSUB don't work, instead "?EDIT MODE ERROR" is displayed
One can leave 'edit mode' again by issuing EDIT OFF.
I can't quite figure out the actual use of this mode; perhaps it's a development build leftover; Maybe someone else wants to dig a little deeper...