I currently have an open question on math.stackexchange, where I have receieved a helpful comment towards a solution.
I now wish to edit my original question by adding some further material and citing the helpful comment as the reason for doing so. Is it sufficient to link the comment, or is there a more correct approach?
@usernym
syntax will bring your revised Question to their attention (given that their Comment still exists on the Question). Some related discussion was here and its links. $\endgroup$ – hardmath Jan 21 '18 at 0:21