Yes yes, I just used the CLI successfully for the first time (I gave up trying to use the CLI a while ago after a few unsuccessful tries). It is great for testing line by line arguments to see what works best for a script design. So again, the error was more about my lack of knowledge, which would possibly have been amended by some little passage somewhere in the manual... I have given good consideration to the manual and perhaps re-reading it would yield a few previously over-looked things.
One thing I am curious about: Is it possible to insert a lilypond code snippet " \midi {} " between the two last entries in full lilypond view? I.e., so it looks like:
>>
\midi {}
} %End of Movement
Or is that too late in the score to insert lilypond syntax?