jim said:

suggest you keep working in this direction as I think it would make a contribution.

well, yes and no. it's good for doing a word-by-word proofing... but, as i've shown, that methodology is overkill, at least when it is practiced over an entire book that was properly and aggressively preprocessed, as upwards of 90% of the lines are already perfect. it is good at pulling out the other 10% of the lines, however, and subjecting them to a closer scrutiny. plus it does have utility in doing a _comparison_ between two files, as is shown in this screenshot:

   http://z-m-l.com/go/sitka/findlines.png

that screenshot also gives you some hints about how i go about slicing the lines, although that's not really too difficult to figure out on your own. -bowerbird p.s. the pinkish lines in that screenshot are lines that have a diff between the two different versions. the numbers by the asterisks are a simple counter for the number of diffs cumulative to that point...