Comment 7 for bug 658792

There are many comments about what is "best" for OCR (which is assumed to be the goal of text-mode scanning). Some points:

1. OCR is so terrible in linux, it's hardly worth bothering with OCR tuning
2. Even so, I've read various tips on best OCR scanning method: the majority now seem to say grayscale
3. disk is so cheap, and with the hope of future OCR that actually works, erring on the side of more information would be preferable (that is, 8 bit grayscale)
3b. i would also make the default resolutions higher which also future proofs for better OCR.

If anyone actually wants 1 bit line art, then this could/should be a simple post-processing step if not an alternative option in simple-scan.