Dear Idiot Apathy and All,
Thanks guys with the clarity on edges. I can't stop thinking about edges and planes at the moment... They're everywhere!
Lieblos that picture of the cushions really helped me a lot. I didn't know what you were talking about the first time I looked at it, but the second it dawned on me. The edge running from corner to corner is changing. Duh!
I think there's a couple of things stated by Elwell thats really helped to galvanize (or at least improve) my understanding of edges.
1. "...it has to do with how 'fast' the form turns."
2. "...(an edge is) any place where two 'pieces of paint' meet."
Is this not ALL you need to know about edges?!
I think my big problem with 'edges' was that it does not have an exact translation between it's lay meaning and painting. In painting it's means something slightly different, bigger, deeper! (Can you tell this has really opened up my mind?)
I also want to thank ChrisMayernik for the PS2 setup. I had just been using all the keyboard shortcuts before and thought, 'bah! seems a bit unnecessary'. But then curiosity got the better of my ego and I gave it a try. I'm using a much simpler set up all round now allowing me to concentrate more on painting and less on the tools.
"If a man be gracious and courteous to strangers, it shows he is a citizen of the world."