The XML option lets you choose the case of the names in the XML generated by the XMLCHAR built-in function
.-UPPER-. >>-XML--(--CASE--(--+-ASIS--+--)--)----------------------------><
Under the CASE(ASIS) suboption, the names in the XML generated by the XMLCHAR built-in function will be in the case used in their declares. Note that if you use the MACRO preprocessor without using the macro preprocessor option CASE(ASIS), then the source seen by the compiler will have all the names in upper case - and that would make specifying the XML(CASE(ASIS)) option useless.