The VSA indicator is an advanced volume analysis tool offering three distinct modes to suit different trading approaches.

1. Fixed Ratios mode categorizes volume by comparing it to a moving average multiplied by user-defined fixed ratios, providing manual control over volume thresholds.

2. Standard Deviation mode adapts automatically to market volatility by classifying volume based on its deviation from the moving average, suitable for use across various instruments and timeframes without manual adjustment.

3. True VSA (Contextual) mode applies a professional volume spread analysis by evaluating volume in conjunction with bar range and close position to identify key market signals.

This multi-mode indicator supports a wide range of markets including Forex, cryptocurrencies (e.g., BTCUSD, ETH), commodities (e.g., gold, oil), indices (e.g., NAS100, SP500), and stocks. It enables traders to switch instantly between modes to align with their preferred analysis style and trading strategy.