I should be able to place block-style comments in QL expressions

(User Story, Investigate , Priority: High, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284oe not found, )
Summary: That is, /* ... */ style comments.
Need to think about how to implement this, but in principle it makes sense. Can we simply have QLParser preprocess the input text, and strip out these blocks?
I think it's fine to declare that these cannot be nested, as is usual in C-family languages.