Leverage
A broker loan letting you control a position larger than your deposit. Ratios like 1:30, 1:500.
At 1:100, $1,000 margin controls $100,000 position. Leverage magnifies gains and losses equally - it doesn't create edge. It's capital efficiency, not a return multiplier. Retail regulators cap it precisely because retail uses it wrong.
Learn to actually use Leverage.
Definitions are the easy part. The free first five modules put this on a real chart and make you do the work. No card required.