HARBOUR string functions that support Only ANSI character set

All these functions work with CodePages using custom character indexes (ANSI CodePage), do not support UNICODE character set

LEN()
AT()
HB_AT()
HB_ATI()
MLCTOPOS()
MPOSTOLC()
PAD() /* synonymn for PADR */
PADC()
PADL()
PADR()
RAT()
HB_RAT()
LEFT()
RIGHT()
LOWER()
UPPER()
STUFF()
SUBSTR()
TRANSFORM()
HB_STRSHRINK()
ISALPHA()
ISDIGIT()
ISLOWER()
ISUPPER()