A simple keyword approach I have implemented and it works well. But that approach only goes so far.

The more high-level/multiword/sentence-based my regexes become, the more they leave my specific problem domain, and slide towards the general language domain. This effect surely must be encountered by all language-program programmers who capture text. One would hope eventually to find one anothers' regexes useful, at least at some point to a degree.

Yes, there are no doubt big expensive programs, but I am doing this for myself. No budget, I am afraid. I have many etexts; I want them accessible on a conceptual level.

Thanks.