a\
b
you might expect to get “a b” or an error, but actually you get a single-item definition list with term “a” and definition “b”, just the same as if you had omitted the backslash.A far more logical meaning of a trailing backslash is to escape the newline, meaning, in HTML terms, insert <br>. That’s what I chose in my LML, and I later learned CommonMark chose that too.
That's what it does in this example. Don't have to use other cases, and don't believe I did.