hang vol_ser=123456 file=mytape mode=read_write density=1600

[Guy Harris]

The usage of "-" as the option indicator character in UNIX dates back to
Multics, which made the same choice.  DEC operating systems use "/", and
the reason why UNIX can't use this is left as an exercise to the reader...
Multics' path name syntax used ">", so they could have used "/"; the reason why
UNIX couldn't use ">" is also left as an exercise (Multics also used "<" to
move up in the hierarchy, in the same way UNIX uses "../").  "+" might be
preferable, although it's slightly more inconvenient to type (it's shifted,
while "-" isn't).  Stratus also uses "-" as the option indicator, but
considering one of Stratus' founders is the guy who wrote the Multics PL/I
compiler, the fact that Stratus' OS was written in PL/I and resembles a
certain MIT/Honeywell/Bell Labs sort of product should be obvious...

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy