Jim Leonard wrote:
  Con:  The OCR is only 90% accurate.  You do a lot of
touch-up. 
The straight conversion is easy using a great many free
and non-free tools.
OCR is the hard part and I've yet to hear of anything that is
even close to remotely acceptable. At say 1000 words/page
a success rate of 99.9% still leaves you with one fix up
per page. That's a good chunk of work for even a small manual
(say 200 pages). It's a lot of work for an RT-11 manual set
or similar!
Antonio
--
Antonio carlini
arcarlini at 
iee.org