The function TRANSLATE()

The function <TRANSLATE called without the tab_in and tab_out parameter to 
translate the input string to uppercase only handles the characters from A 
to Z. National characters (like German "Umlaute") are not converted. Note 
also that there is no function to convert a string to lowercase. 

(see Uppercase & Lowercase including German "Umlaute" for a possible 
solution of this problem. Note that the REXXUTIL DLL from Object-Oriented 
REXX contains a function for country-dependent uppercase translations)