VMS Help CC, Messages, PROTOTAG  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        The extracted header file contains prototypes with
                tag names, which should be moved to after the tag
                name declaration.

 Description    When extracting function prototype declarations, the
                compiler has encountered a parameter type specifier
                that references a tag.  Because the created prototype
                will use this tag, it should be moved after the tag
                declaration in the final compilation source.  This
                message can only be generated when the compiler has
                been invoked with the option to extract function
                prototype declarations.

 User Action    Be aware of this if you wish to use the output .H
                file.