+05Dec00=======================================================================
+1. fix frequency hinting routine so it correctly handles things like 'on 23cm'
+where digits are the 'wrong' way round.
+2. made default max days to search for spots 3 months.
+3. added hex decodes for those pesky 'national' characters that aren't really
+in grepdbg and watchdbg.
+4. decide that we are using Latin-1 and therefore characters 0x80-0x9f are
+not allowed.