This file documents libgocr. Unless you are developin frontends or modules, you shouldn't be reading it. It's filled with technical information and documentation of functions, and just the last phrase probably made 50% of whomever read it immediately close the window <grin>. In case this file is not what you are looking for, you can take a look at the ``Brief introduction'' documentation (which is not written yet, so you may read section2.4.1).
Take notice that, while we try to keep this file uptodated, it's inevitable to forget something and impossible to keep the latest improvements in code in synchrony with this file. Since the file is intended to be a user's guide and not a reference guide, it's not so bad. Always keep in mind that the automatically generated documentation (with Doxygen) is more accurate (but less complete).