 [semidet]set_url_encoding(?Old, 
+New)Query and set the encoding for URLs. The default is
[semidet]set_url_encoding(?Old, 
+New)Query and set the encoding for URLs. The default is utf8. 
The only other defined value is iso_latin_1.
- To be done
- Having a global flag is highly inconvenient, but a work-around for old 
sites using ISO Latin 1 encoding.