How does a high stall converter work?

[xtreme80]

In a street truck with a mild to moderate 350 (350-400hp), how would, say, a 2500 stall converter work?

If I'm understand this right, it let's you apply the brake, then press down on the gas, and allow the engine to rev to around 2500 RPM so that when you let off the break you have a better launch off the line. I'm also thinking this is a very simple way to explain it.

Is this correct?