Since this has now been pinned (thanks!) I've removed the last note that lxrec is responding to, but I'll copy it here for posterity:
Summary
However this way of posting code isn't so obvious. It relies on a new user being aware of the github syntax and guessing that this forum uses the same syntax. I didn't when I first arrived and frequently new users post code that's hard to read because they aren't aware of how to format it for this forum's software.
Could there be somewhere that explains this placed where new users can see it?
I didn't realize that the syntax was now in the CommonMark spec. Thanks for the correction.