High Zone Mapper

High Zone and Low Zone Mapper — Quick Manual (Short-Term Trading)
Author: hkpress | Script date: 2025-10-26

This indicator draws: PDH/PDL (Prior Day High/Low), PWH/PWL (Prior Week High/Low), ORH/ORL (Opening Range High/Low), IDH/IDL (Intraday High/Low), plus a shaded Opening Range box.

I built this script after watching an interview on TradingLion with a Hong Kong trader who uses prior-day, opening-range, intraday, and prior-week levels to plan entries and exits. The approach is especially useful for traders who run tight stops (about 1.5%–3%) while aiming to size up into bigger positions. (Youtube: youtube.com/watch?v=lS9zbnLi1Gg)

1) Quick Start (15-minute default)

Timeframe: use 1–15m for scalps, 5–30m for intraday.
Opening Range (OR — Opening Range): default 15 minutes.
Turn on “Show OR lines while opening range builds” if you want to see ORH/ORL during the first 15 minutes.

Session mode:
Stocks → Use Trading Session = ON (RTH — Regular Trading Hours, e.g., 09:30–16:00).
Crypto/24h → Use Trading Session = OFF (day-start mode).
Visuals: enable PDH/PDL, PWH/PWL, ORH/ORL, IDH/IDL, and the Opening Range box (fill).

2) What each line means

PDH/PDL (Prior Day High/Low): Yesterday’s extremes; frequent reaction zones.
PWH/PWL (Prior Week High/Low): Last week’s extremes; stronger “fences.”
ORH/ORL (Opening Range High/Low): High/low of the first 15 minutes by default; key breakout compass.
IDH/IDL (Intraday High/Low): Today’s high/low so far; confirms momentum after a break.

3) Short-Term Playbook (step-by-step)

A. Before the open

Note where price is vs PDH/PDL and PWH/PWL to set a bias.
Above PDH and pushing up → bullish lean.
Below PDL and slipping → bearish lean.

B. First 15 minutes (Opening Range forms)

Let the Opening Range box print (ORH top, ORL bottom).
Think of this box as the day’s first “battlefield.”

C. Breakout entries

Long: Clean break above ORH (preferably with momentum/volume).
Stop: just below ORH (aggressive) or below ORL (conservative).
Targets: step up through PDH → PWH.
Short: Clean break below ORL.
Stop: just above ORL (aggressive) or above ORH (conservative).
Targets: step down through PDL → PWL.

D. Retest entries (missed the first move?)

After a break, wait for a retest of ORH/ORL from the other side.
Enter on rejection/continuation; place stop on the opposite side of the retested level.

E. Momentum confirmation

New IDH (Intraday High) after an ORH break = trend strengthening (consider add/hold).
New IDL after an ORL break = downtrend strengthening.
Trail stops below higher lows (long) or above lower highs (short).

F. Range mode (no break yet)

If price stays inside the box, fade edges: buy near ORL, sell near ORH, until a decisive break.

4) Risk rules (keep it simple)

Aim for R:R (Risk-to-Reward) ≥ 1:2.
Set a daily max loss (e.g., 1–2R) and respect it.
Invalidation: if price breaks and then re-enters the box and holds, exit—don’t argue.

5) Quick example

The 15-minute OR prints: ORL = 100, ORH = 105.
Price breaks 106 with momentum → Long.
Stop 104.8 (below ORH) or 99.8 (below ORL).
Targets: PDH, then PWH. Trail as IDH keeps making new highs.

6) Handy tweaks

Noisy/news days: widen to 30-minute OR to reduce whipsaws.
Strong trend open: tighten to 5–10-minute OR to engage earlier.
Choppy session: stick to box-edge fades or stand aside after two failed breaks.

7) Built-in alerts to consider

“Break Above ORH / Below ORL” → entry triggers.
“New IDH / New IDL” → momentum confirms; tighten stops or scale.
“Break Above PDH / Below PDL / Above PWH / Below PWL” → target hits or bigger trend shifts.

8) Troubleshooting

• No lines? Switch to an intraday timeframe (1–60m).
  
• ORH/ORL missing? Turn ON Show OR lines while opening range builds.
  
• Session mismatch? Use correct RTH hours, or turn session OFF for 24h symbols.
  

Abbreviation cheat-sheet

• OR (Opening Range), ORH/ORL (Opening Range High/Low)
  
• PDH/PDL (Prior Day High/Low)
  
• PWH/PWL (Prior Week High/Low)
  
• IDH/IDL (Intraday High/Low)
  
• RTH (Regular Trading Hours), R:R (Risk-to-Reward)