The screen editor was a feature of specific BASIC interpreters though, for instance the BASIC on Acorn Atoms didn't allow it (AFAIK only later on the BBC Micro)

The screen editor was a feature of specific BASIC interpreters though, for instance the BASIC on Acorn Atoms didn't allow it (AFAIK only later on the BBC Micro). Some BASIC screen editors also had a primitive form of copy/paste.