Infer the meaning from the context.

    a) it's a bullet point
    b) a+b means a is a variable
    c) apple means a means the sound "aaaah"
    d) ape means a means the sound "aye"
    e) 0xa means a means "10"
    f) "a" on my test paper means I did well on it
    g) grade "a" means I bought the good bolts
    h) "achtung" means it's a German "a"

I didn't need 8 different Unicode characters. And so on.