unicode.org misunderstands the apply character

9.16: unicode.org misunderstands the apply character:

"(

. U+2061 function application is used for an implied function dependence,

as in f(x + y).

To indicate that this is the function f of the quantity x + y

and not the expression fx + fy,

one can insert the nondisplaying function application symbol

between the f and the left parenthesis.

) [@] chapt15`page#508 .

. unicode has an implied (invisible)

apply operator f(x) => f[apply](x)

unicode.org's description doesn't quite get that:

they thought it was for noting f(x+y) meant that rather than fx+fy

but in that example, the paren's do that!

the point is that in any situ' where it's not clear that f is a function,

the apply character lets the editor know

that the terms {f, arg} should be kept together

so that the arg is not wrapped on the next line,

or that the parenthetical belongs to the previous name,

not the previous phrase .