Anne Ogborn wrote:

> That's what's happening when you turn on a cheap computer printer
> and it slews the carriage to one end.

  And every floppy drive you have ever seen except Commodore or Apple II
which used a ... ahem ... more pragmatic approach.

Gary Cadman wrote:

> The system has a specified requirement to incorperate movement
> checking so although it does not need it it has to have it for
> confirmation.

  In which case, is it *really* necessary for each and every step?
--
  Cheers,
        Paul B.