Notes
From the mapping desk
Short pieces on zones, flips, and the habits that keep a chart honest.
A line is not a zone
Why single-pixel horizontals fail on noisy charts — and how to choose width you can defend.
When resistance earns support
Role flips are not automatic. The evidence that turns an old ceiling into a floor.
How many levels is too many
Chart clutter is a mapping failure. A simple prune rule for support and resistance.