Max

The highest value of the last N bars, this bar included, drawn over the candles as a stepped ceiling.

Max keeps the largest of the last N values of its input, the current bar included. With the default input that is the highest close of the last 60 bars. The line jumps when a new high arrives, stays flat while that high is inside the window, and steps down when it drops out of the window.

How to read it

The line sits on the price scale, at or above every close in the window.
Where a close touches the line, the close is making a new N-bar high.
A flat stretch means the high is still inside the window; a step down means it just dropped out.

What it outputs

Max: The largest close of the last N bars, this bar included, on the same scale as the candles.

Settings

Window: How many bars the high is taken over. Longer windows hold a high for longer and step less often; shorter ones follow the closes closely and touch them often.

Pitfalls

The current bar counts, so a close can equal the line but never rise above it: 'close above Max' never fires. Compare with Max a bar earlier to catch a breakout.