All Levels This script draws key price levels on your chart, including:
	•	Previous Day (PD): High, Low, Close
	•	Day Before Yesterday (DBY): High, Low, Close
	•	Pre-Market (PM): High and Low
	•	Today’s levels: High, Low, Open, Close
	•	Current bar levels: High, Low, Open, Close
Each level is displayed as a horizontal line with a label showing the level value.
It works on any timeframe, including 1-minute charts, and automatically updates as new bars form.
⸻
2. Features
	1.	Custom Colors
Each type of level has its own color, declared as a const color. For example:
	•	Previous Day High = red
	•	Today’s Close = gold
	•	Pre-Market High = fuchsia
	2.	Right-Extending Lines
All horizontal levels extend to the right, so you always see them on the chart.
	3.	Persistent Labels
Every line has a label at the right side showing its name and price. For example:
	•	PDH 422
	•	TODL 415.5
	4.	Dynamic Updates
The script updates automatically whenever a new bar forms, so levels stay accurate.
	5.	Session-Based Pre-Market
You can define the pre-market session (default “04:00–09:30 EST”). The script calculates the high and low of this session only.
	6.	Checkbox Inputs
You can enable/disable entire groups of levels:
	•	Previous Day
	•	Day Before Yesterday
	•	Pre-Market
	•	Today
	•	Current bar
