with chr goes too Unicode, as well as in the string, there in the Notation \uxxxx.
example for chr:
chr 8703
thereby is 8703 dezimal anzugeben. in the String standing behind \u a Hexadezimalzahl, here means "\u21FF".
How is the other statement of Hexadezimalzahlen planned? be straight with Gesten, there could one in the spending whom String then through chr ... supplant.