6.20.25: Unichar- Semantics for UNICODE(UNICHAR(N)) doesn't hold true for all values of N

Change this sentence: "Evaluators should implement UNICHAR such that UNICODE(UNICHAR(N)) returns N for any N >= 0 and N <= 1114111."

TO: "Evaluators should implement UNICHAR such that for values of N (N >= 0 and N <= 1114111) that UNICODE returns a character, UNICODE(UNICHAR(N)) returns N."

1) Replace the semantics section of 6.20.25 UNICHAR

"Semantics: Returns the character represented by the given numeric value. Evaluators shall support
values between 1 and 0xFFFF, which is the maximum possible value in UCS-2 encoding using two
octets. Evaluators should allow N to be any legal character value in [UNICODE] assuming UCS-4
encoding. Evaluators should implement UNICHAR such that UNICODE(UNICHAR(N)) returns N for
any N >= 0 and N <= 1114111."

with

"Semantics: Returns the character having the given numeric value as [UNICODE] code point.
Evaluators shall support values between 1 and 0xFFFF. Evaluators should allow N to be any [UNICODE] code point of type Graphic, Format or Control. Evaluators should implement UNICHAR such that UNICODE(UNICHAR(N)) returns N for any [UNICODE] code point N of type Graphic, Format or Control."

2) Delete the Note:

"Note: Depending on the evaluator's encoding the string returned may be actually longer than
expected, for example in UTF-8 or UTF-16 encodings."

3) In the Summary, insert the word "the" to read:

"Return the character represented by ..."