Qualified addressing lets you use the same symbol to refer to data in different storage locations. Qualified symbols are ordinary symbols prefixed by a symbol qualifier and a period. A symbol qualifier is used to specify which base register the assembler should use when converting an implicit address into its explicit base-displacement form. Before you use a symbol qualifier, you must have previously defined it in the name entry of a labeled USING instruction. For information about labeled USING instructions, see USING instruction. When defined, you can use a symbol qualifier to qualify any symbol that names a storage location within the range of the labeled USING. Qualified symbols can be used anywhere a relocatable term can be used.

         MVC             TARGET.X,SOURCE.X
         MVC             TARGET.Y+5(3),SOURCE.Y+5
         XC              TARGET.X+10(L'X-10),TARGET.X+10
         LA              2,SOURCE.Y