It would be easier to suggest, if the $ didn't look so odd. The "$" is a funny looking symbol.
I was imagining how the shape of the C, and the S, and almost a T is within the $, and it's crossed out to show you should not alter it. Yet those thoughts are very abstract.
So, I would be happy with any of the 3. - := is nonconst - := is const - := and $=
