Here's another idea that I find very practical.
If I draw a Y highlight, it would be perfect for the DOM note column to fill with the same color as the highlight on the right price levels.
If I draw a global line, it sends the text of the line on the price level to the DOM.
For example, this would look like this for the future global highlight Y :

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In review
💡 Feature Request
Over 2 years ago

Jean-Philippe
Get notified by email when there are changes.
In review
💡 Feature Request
Over 2 years ago

Jean-Philippe
Get notified by email when there are changes.