There are ways to work in the darkroom, and there are WAYS to work in a darkroom. I may have a little added benefit over some because for a number of years I worked in a print shop, making half tones, burning plates, making negs and masks, and so on. As you noted, there are techniques that go beyond waving a piece of cut out cardboard over the paper for local tonal and contrast adjustment.
Shel > [Original Message] > From: Rob Studdert > Most printers have their own language to describe dodge/burn a print needs to > be subjected to however it's not universal. Consistent results WRT D&B can be > obtained using a film contact mask :-)