[ludston]

You need to clarify your example, because it appears that you are inserting `+` and `3` between existing parens rather than shifting them.

But regardless, I think the answer you are looking for is:

Some of the coolest kids of all use rainbow delimiters so that they can easily identify the matching closing paren with their eyes!

[wink]

I tried, I'd need to crank the font size up to 14+ to discern the difference ;)