Why <const> needs to be a suffix? could it be a prefix with respect to variable name?
(this would allow to write something like "local const" which looks more natural).
Is there a reason to have opening and closing mark? Or one could get away with something like !close or close! as Philippe was proposing?
Actually I like the use of the exclamation mark as it draws attention to something peculiar.
(I would use it for <close> which is really peculiar rather than <const> but anyway you get the idea)
Thank you very much for all the answers and comments I got
Andrea
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