Copy handwritten text

Hi. I’m using MarginNote3 for adding mathematical proofs to statements in notes using handwriting mode. Often I have to repeat certain formulas in my proof text and what I miss a bit is the possibility to copy a given portion of the written text and paste it inside the same note. What I end-up doing now is I just write the formulas manually again but it is time-consuming.

I tried using the Drawing-Select tool and selected the portion of the handwritten text I’d like to duplicate but the only thing I can do with it is move it to a different position on the canvas or delete that portion. But nowhere can I duplicate that selected portion.

Is there a way to do that in MarginNote3 and if not then do you plan to include that feature?

Can anybody from the dev. team comment on this?