The LJ Synergy ID Indicator is a useful free Forex indicator for the MT4 platform. It is a popular indicator among traders as it helps to identify the trend and momentum of the market. The indicator is based on the LJ Synergy system, which uses a combination of two indicators to determine the trend and momentum of the market. The indicator is composed of two lines, one for the trend and one for the momentum. The trend line is based on the Moving Average Convergence Divergence (MACD) and the momentum line is based on the Relative Strength Index (RSI). When the trend line is above the momentum line, it indicates an uptrend, and when the trend line is below the momentum line, it indicates a downtrend. The indicator also has a signal line which is used to provide buy and sell signals. When the signal line crosses above the trend line, it is a buy signal, and when it crosses below the trend line, it is a sell signal. The indicator is easy to use and can be a great tool for traders looking to identify the trend and momentum of the market.