when compiling with the UNICODE symbol and to PT_MV_STRING8 when not
compiling with the UNICODE symbol.
{$IFDEF UNICODE}
PT_TSTRING = PT_UNICODE;
PT_MV_TSTRING = MV_FLAG or PT_UNICODE;
{$ELSE}
PT_TSTRING = PT_STRING8;
PT_MV_TSTRING = MV_FLAG or PT_STRING8;
{$ENDIF}