It would be easy and useful to put the commonly used keyboard shortcut characters (⌃⌥⇧⌘⎋⏏⌫↑⇡↖⇞⇥, and perhaps others — see here for a list, which you can also place at ~/Library/Key Bindings/DefaultKeyBinding.dict to type these characters easily) somewhere on the page (perhaps in the editing help, or discreetly in the footer?) so people could copy and paste them when writing questions/answers if they don't have an easy way to type them.