[Gm2] ISO SYSTEM clarification

[Gaius Mulley]

Hi,

I'm currently implementing the ISO SYSTEM module and was wondering
whether other compilers support SHIFT and ROTATE on non SYSTEM
types. Ie is it permissible to:

FROM SYSTEM IMPORT SHIFT ;

VAR
   foo: SET OF CHAR ;

BEGIN
   foo := {'a', 'b'} ;
   foo := SHIFT(foo, 1)
END

Thanks Gaius

The 4th Interim version working draft seems to restrict the type to a
system type, whereas the iso definition modules have a more relaxed view..

Gaius