I highlight it. Then 2 new lines, then the actual body of the message, i.e.: @recipient TL;DR: ...................... ..........................

I highlight it. Then 2 new lines, then the actual body of the message, i.e.: @recipient TL;DR: ...................... ............................. ..........................[1] ............................. ..............[2]............ ............................. ............................. -- [1] footnote A [2] footnote B