🚀 go-pugleaf

I know that Intel markets a UNIX-clone which was previously of AT&T.

I would appreciate if somebody could help me to throw light on the following
points:

1) How many UNIX-clones does Intel sell on the market?

2) What way does Unix from Intel differs from AT&T V5R3.2. From UNIX from ISC
(Interactive?) From SCO-UNIX?

3) I know that there is a version named UNIX V5R4 whose release was expected
and might already have taken place for what I know. Is this version released
by now? Is its purchase possible? For what price? What are the relations with
the hard-to-be-born UNIX AT&T V5R4?

4) I'm intersted in having a UNIX-clone as similar as possible to the BSD
(C-shell and stuff like that?) Is there anything made by Intel which could 
satisfy my desires/exigencies ..........

Any other information will be welcomed ............

		     Thanks in advance for your help:
						      Aldo.