There is no such thing as a 'regular keyboard'. Each country has its own national version, and that you happen to have these symbols, doesn't mean that others have them. (Have you ever been in Taiwan?) I do have í on my PC, but not on my laptop.
Grouping of atoms was also proposed by Bob (in various forms, either by enclosing them (and then I would not use parantheses but braces { }), or by connecting them with some infix operator like |.
There is no such thing as a 'regular keyboard'. Each country has its own national version, and that you happen to have these symbols, doesn't mean that others have them. (Have you ever been in Taiwan?) I do have í on my PC, but not on my laptop.
Grouping of atoms was also proposed by Bob (in various forms, either by enclosing them (and then I would not use parantheses but braces { }), or by connecting them with some infix operator like |.