stowpirate
skinflintish camera nut
You can of course sharpen a film image at the stage of printing in the case of black and white. You use a high-accutance developer which increases development at the edge of darker areas where they meet light areas and simultaneously reduces the development on the light side of the edges. Image sharpening in Photoshop does a similar thing with digital images.
You can do a lot of things while processing the film but it takes time effort and planning. If it goes wrong you have to start again as you have no undo function. With digital these things are instant and you can start with a negative scan. Also most photo editing software allows you to create the film look. Paint Shop Pro has interesting retro black and white tools. Its much maligned Time Machine allows you to replicate photos taken in the 1800's onwards. My favorite is ShowFoto black and white tools and Picasa has the same sort of features much simplified.
This is an old version with the latest version giving film types and a few other features





(I didn't see your second post about it before I posted btw
Apart from the paper Vs screen lark, you sure about that? 

