@kviiri Notation, especially notation used commonly elsewhere, is a good fix for that. That way, even if the language makes it difficult to see it's the same thing, they would at least be easily discernable bounds.
[inclusive, inclusive]
[inclusive, exclusive)
(exclusive, inclusive]
(exclusive, exclusive)
Anything that would be in a bound, would use one of the above. Saves on letters, gets the point across simply. Use something like this for one-sided bounds:
(exclusive, •)
[inclusive, •)
(•, inclusive]