An indicator is a result of mathematical calculation, based on prices and/or volume. The figures received are used for forecasting price changes. There is a vast number of elaborated technical indicators. Some of them are presented in MetaTrader 4 : 

• Accelerator/Decelerator Oscillator — AC
• Accumulation/Distribution — A/D
• Alligator
• Average Directional Movement Index — ADX
• Average True Range — ATR
• Awesome Oscillator — AO
• Bollinger Bands — BB
• Commodity Channel Index — CCI
• DeMarker — DeM
• Elder-rays
• Envelopes
• Force Index — FRC
• Fractals
• Gator Oscillator — Gator
• Ichimoku Kinko Hyo
• Market Facilitation Index — BW MFI
• Momentum
• Money Flow Index — MFI
• Moving Average — MA
• Moving Average Convergence/Divergence — MACD
• Moving Average of Oscillator — OsMA
• On Balance Volume — OBV
• Parabolic SAR
• Relative Strength Index — RSI
• Relative Vigor Index — RVI
• Stochastic Oscillator
• Williams’ Percent Range — %R