Possible values include a wide range of single- and multi-byte encodings
(ranging from RTL_TEXTENCODING_MS_1252 to RTL_TEXTENCODING_GB_18030),
the ISO 10646 (Unicode) specific encodings RTL_TEXTENCODING_UCS4 and
RTL_TEXTENCODING_UCS2 (aka RTL_TEXTENCODING_UNICODE), and
RTL_TEXTENCODING_DONTKNOW to indicate an unknown or missing encoding.