[Title Suggestion]: Verified AFL Trading Strategy – [Insert Strategy Name, e.g., EMA Cross with RSI Filter] 1. Strategy Overview

[Briefly explain how the code works, e.g., "This strategy enters long when the 50-period EMA crosses above the 100-period EMA while the RSI is above 50"]. Timeframe: [e.g., 5-minute, Daily, Weekly]. Asset Class: [e.g., Equities, Forex, Indices]. 2. Verified AFL Code Always use code blocks ( ) when posting on the AmiBroker Forum to ensure it is readable and easy for others to copy.

/* Verified Strategy: [Strategy Name] Requirements: License Verified Badge */

SetChartOptions(0, chartShowDates); _SECTION_BEGIN("Trading Logic");

// Variables MA_Fast = MA(C, 50); MA_Slow = MA(C, 100); RSI_Val = RSI(14);

// Entry and Exit Conditions Buy = Cross(MA_Fast, MA_Slow) AND RSI_Val > 50; Sell = Cross(MA_Slow, MA_Fast) OR RSI_Val < 30;

// Visuals Plot(MA_Fast, "EMA 50", colorGreen, styleLine); Plot(MA_Slow, "EMA 100", colorRed, styleLine); PlotShapes(Buy * shapeUpArrow, colorGreen, 0, Low); PlotShapes(Sell * shapeDownArrow, colorRed, 0, High);

_SECTION_END(); Use code with caution. Copied to clipboard 3. Verification Status My account has the "License Verified" Backtest Results:

[Optional: Briefly mention if you have run a backtest and any key findings]. Important Posting Tips Get the Badge:

On the official AmiBroker forums, you must have the "License Verified" badge to create new topics or ask questions. You can verify your license through the AmiBroker Members Zone Show Your Work:

When asking for help, always post the code you have already tried rather than just a description. This makes it easier for the community to debug. Formatting:

Use the "Prettify" feature in the AmiBroker AFL Editor before pasting to ensure consistent indentation.

Blazing Speed: Written in C/C++, it is noted for being up to 100x faster than platforms like TradingView or Python for large-scale backtesting and Monte Carlo simulations.

Extreme Customization: Professional traders value its ability to model complex portfolio-level strategies and multi-timeframe analysis that simpler platforms cannot handle.

Verification & Community: The "License Verified" badge on official forums is used to confirm legitimate users, which often leads to better support from the community and the developer. Pros and Cons Pros Cons

Fastest Engine: Ideal for high-frequency historical data analysis.

Steep Learning Curve: Requires technical proficiency; not beginner-friendly.

One-Time Cost: More affordable long-term compared to monthly subscription models.

Outdated UI: The interface is often described as looking like it’s from the 1990s.

Robust Automation: Can integrate with broker APIs via third-party "bridges" for live trading.

Technical Support: The official community can be "hostile" toward basic questions, often redirecting users to documentation. Who Is It For?

AmiBroker Formula Language (AFL) is a powerful tool, but a "verified" tag on code is the difference between a winning strategy and a blown account. Why Verification Matters

Backtest Accuracy: Prevents "survivorship bias" and "look-ahead" errors.

Execution Safety: Ensures logic doesn't trigger ghost trades.

Performance Stability: Confirms the math holds up across different market cycles. Core Verification Checklist 💡 The "Must-Haves" for Professional Code

Syntax Check: Passes AmiBroker’s built-in Check Selection tool (Shift + F6).

No Future Leaks: Logic never references tomorrow's data to trade today.

Robust Error Handling: Includes SetChartOptions and SetTradeDelays to define environment rules.

Optimization Ready: Uses variables that can be tuned without breaking the core logic. Anatomy of Verified AFL A reliable snippet usually follows this structural flow:

System Settings: Defines capital, commissions, and slippage. Indicators: The technical "engines" (e.g., EMA, RSI). Entry/Exit Logic: Clear Buy, Sell, Short, and Cover arrays.

Risk Management: Hard-coded stops or dynamic trailing exits.

Visuals: Clean Plot functions for manual verification on charts. How to Self-Verify

The Bar-by-Bar Test: Use the "Bar Replay" tool to see if signals appear as expected.

Parameter Stress: Change periods (e.g., from 14 to 20); the system should shift, not crash.

Out-of-Sample Testing: Run the code on data it hasn't "seen" before to prove it isn't overfitted.

If you have a specific indicator or strategy in mind, I can help you draft or audit the logic to ensure it meets these standards. To get started on your code, tell me:

The indicator or logic you're using (e.g., MACD crossover, Mean Reversion) Your preferred timeframe (e.g., Intraday, EOD)

Specific risk rules you want to automate (e.g., 2% stop loss)

Creating a proper write-up for verified AmiBroker Formula Language (AFL) code involves more than just sharing the script. To help others understand, use, and trust your code, it is best practice to provide clear context, logic explanations, and usage instructions. 1. Verification & Header Information Before sharing your code on official platforms like the AmiBroker Forum , ensure you have your "Verified Badge"

. This badge identifies you as a legitimate license holder, which increases trust and engagement from the community. AmiBroker Community Forum

At the top of your AFL file, include a header section using comments ( Project Name : A descriptive title for the formula. Version/Date : Current version and date of the last update. : Your name or forum handle.

: A 1-2 sentence summary of what the code does (e.g., "Calculates the closing value needed to reach a specific RSI target"). 2. Logical Documentation A "proper" write-up explains the behind your code. Algorithm Steps

: Outline the trading plan or mathematical logic. Avoid relying on "gut feeling" and instead document the parameters for Buy/Sell decisions Function Descriptions : If you use custom functions , explain their inputs and outputs. Variable Scoping : If you use

or global variables, clarify where they are defined to help others avoid "uninitialized variable" errors. AmiBroker Community Forum 3. Usage Instructions Help users implement the code by describing: Calling custom user functions in our code - AmiBroker

Step 2: The Backtest Radar Screen

Run the AFL on a radar screen (e.g., All S&P 500 stocks) for the last 3 months.

3.1. Use the AFL Editor’s Built-in Tools

Part 6: How to Self-Verify Your Own AFL Code

You don’t need to buy verified code—learn to verify your own. Insert this verification snippet at the end of any AFL script:

// ------------------- VERIFICATION MODULE -------------------

// 1. Look-Ahead Detection
Function HasLookAhead()
// If your strategy uses Zig, Peak, Trough, or Ref with +1, it's dangerous
str = GetScriptText();
if(Find("Zig", str) != -1 OR Find("Peak", str) != -1 OR Find("Trough", str) != -1)
return True;
else
return False;



// 2. Out-of-Sample Check
SetOption("AllowInSample", False);  // Force Amibroker to ignore future bars


// 3. Report to Commentary Window
if(HasLookAhead())
printf("WARNING: Unverified Code – Contains look-ahead functions.\n");
else
printf("VERIFIED: No obvious look-ahead detected. Run Walk-Forward to confirm.\n");


// ------------------- END VERIFICATION -------------------

Run your script, then open View → Commentary. If you see a warning, your code is not verified.

3.6. Unit Test Approach (Manual but Powerful)

For a given small data set (e.g., 10 bars of known OHLC), manually compute expected outputs for your AFL logic, then compare with exploration output.

Steps:

  1. Export 10 bars of data (e.g., CSV).
  2. Write expected signal array manually.
  3. Run AFL scan and compare actual vs. expected.

6. Code Review Checklist for Peer or Self-Review