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+# Moving Average Professional
+
+## 1. Summary (Introduction)
+
+The `MovingAverage_Pro` is a universal, "all-in-one" moving average indicator designed for maximum flexibility and efficiency. It consolidates the four most fundamental moving average types into a single, powerful tool, allowing the user to switch between them with a simple dropdown menu.
+
+The available moving average types are:
+
+* **SMA** (Simple Moving Average)
+* **EMA** (Exponential Moving Average)
+* **SMMA** (Smoothed Moving Average)
+* **LWMA** (Linear Weighted Moving Average)
+
+As part of our professional indicator suite, it fully supports calculations based on either **standard** or **Heikin Ashi** price data, providing a consistent and powerful tool for any analysis style.
+
+## 2. Mathematical Foundations and Calculation Logic
+
+Each moving average type offers a different balance between smoothing and responsiveness. Our implementation is "definition-true" to the standard formulas used in technical analysis.
+
+### SMA (Simple Moving Average)
+
+The SMA is an unweighted arithmetic mean of the last `N` prices. It gives equal weight to all data points, resulting in a smooth line ideal for identifying long-term trends.
+
+$\text{SMA}_t = \frac{1}{N} \sum_{i=0}^{N-1} P_{t-i}$
+
+Where:
+
+* $P_t$ is the price at the current bar.
+* $N$ is the moving average period.
+
+### EMA (Exponential Moving Average)
+
+The EMA is a weighted average that applies more weight to recent prices, making it react more quickly to new information. It is calculated recursively.
+
+The smoothing factor, `alpha` ($\alpha$), is calculated as:
+$\alpha = \frac{2}{N + 1}$
+
+The EMA is then calculated as:
+$\text{EMA}_t = (P_t \times \alpha) + (\text{EMA}_{t-1} \times (1 - \alpha))$
+
+* **Initialization:** The first value of the EMA series ($\text{EMA}_{N-1}$) is calculated as a Simple Moving Average of the first `N` prices.
+
+### SMMA (Smoothed Moving Average)
+
+The SMMA, also known as Wilder's Smoothing, is a specialized moving average with a longer "memory" than an EMA. It is also calculated recursively and is ideal for filtering out market noise.
+
+The formula is:
+$\text{SMMA}_t = \frac{(\text{SMMA}_{t-1} \times (N-1)) + P_t}{N}$
+
+* **Initialization:** Similar to the EMA, the first value of the SMMA series is calculated as a Simple Moving Average of the first `N` prices.
+
+### LWMA (Linear Weighted Moving Average)
+
+The LWMA applies linearly more weight to recent prices. The most recent price gets the highest weight, and the weight decreases linearly for older prices.
+
+The formula is:
+$\text{LWMA}_t = \frac{\sum_{i=0}^{N-1} P_{t-i} \times (N-i)}{\sum_{j=1}^{N} j}$
+
+Where the denominator is the sum of the weights (e.g., for a 3-period LWMA, the weights are 3, 2, 1, and the sum is 6).
+
+## 3. MQL5 Implementation Details
+
+This indicator is a prime example of our modular and efficient design philosophy.
+
+* **Universal Calculation Engine (`MovingAverage_Engine.mqh`):**
+    The entire calculation logic for all four MA types is encapsulated within a single, reusable engine file. This centralized approach eliminates code duplication, simplifies maintenance, and ensures mathematical consistency across our entire indicator suite.
+
+* **User-Selectable Type via Enum:** The indicator uses an `input ENUM_MA_TYPE` parameter, which creates a user-friendly dropdown menu in the settings window. The user's selection is passed directly to the universal engine, which then performs the correct calculation.
+
+* **Object-Oriented Design (Inheritance):**
+    A `CMovingAverageCalculator` base class and a `CMovingAverageCalculator_HA` derived class are used to cleanly separate the logic for standard and Heikin Ashi price sources. The child class only overrides the data preparation method, inheriting the entire calculation logic.
+
+* **Dynamic Naming:** The indicator's name on the chart and in the Data Window automatically updates to reflect the user's current selections (e.g., "EMA HA(50)", "SMA(200)").
+
+## 4. Parameters
+
+* **Period (`InpPeriod`):** The lookback period for the moving average calculation.
+* **MA Type (`InpMAType`):** A dropdown menu to select the desired moving average type (SMA, EMA, SMMA, LWMA).
+* **Applied Price (`InpSourcePrice`):** The source price for the calculation. This unified dropdown menu allows you to select from all standard and Heikin Ashi price types.
+
+## 5. Usage and Interpretation
+
+Moving averages are one of the most fundamental tools in technical analysis.
+
+* **Trend Identification:** The primary use is to identify the direction of the trend.
+  * When the price is consistently above the moving average and the line is sloping upwards, the trend is considered bullish.
+  * When the price is consistently below the moving average and the line is sloping downwards, the trend is considered bearish.
+* **Dynamic Support and Resistance:** In a trending market, the moving average line itself often acts as a dynamic level of support (in an uptrend) or resistance (in a downtrend), providing potential entry points on pullbacks.
+* **Crossover Signals:** A common strategy involves using two instances of the `MovingAverage_Pro` indicator with different periods (e.g., a fast 50-period EMA and a slow 200-period EMA).
+  * A "Golden Cross" (fast MA crosses above slow MA) is a bullish signal.
+  * A "Death Cross" (fast MA crosses below slow MA) is a bearish signal.