Redraw as it moves

This is the habit the whole module exists for, and it takes about five seconds a time.

The rule in one line

In an uptrend, every time a new high forms, drag from the low to that new high again.

In a downtrend, every time a new low forms, drag from the high to that new low again.

The old line goes. It measured a move that is no longer the move you are trading.

New high or new low, redraw. Every time.

A line price never reached