> > I've been coding MVS assembler for 30 years and this is the first I've heard > of this guideline. > > Any decent text on the subject (dating from Struble's "Assembler Language > Programming > the IBM S/360" of the 1960s will point this out.
Some one was asking about books and Struble is IMHO pretty good, and available for a few pounds on Abe Books UK.. Dave
