Pine Script v6 Function Reference: ta.*, strategy.*, input.*, request.*

// Moving averages
ta.sma(source, length)          // simple moving average
ta.ema(source, length)          // exponential moving average
ta.wma(source, length)          // weighted moving average
ta.vwma(source, length)         // volume-weighted moving average

// Momentum
ta.rsi(source, length)          // returns float 0-100
ta.macd(source, fastLen, slowLen, signalLen)  // returns [macd, signal, hist]
ta.stoch(source, high, low, length)           // returns float

// Volatility
ta.atr(length)                  // average true range
ta.bb(source, length, mult)     // returns [upper, mid, lower]

// Trend
ta.supertrend(factor, atrPeriod) // returns [supertrend, direction]
ta.adx(diLen, adxSmoothing)      // returns [adxValue, diPlus, diMinus]

// Crossovers
ta.crossover(series1, series2)   // returns bool: series1 crossed above series2
ta.crossunder(series1, series2)  // returns bool: series1 crossed below series2

// Extremes
ta.highest(source, length)       // highest value in length bars
ta.lowest(source, length)        // lowest value in length bars
ta.highestbars(source, length)   // bars since highest value
ta.pivothigh(source, leftLen, rightLen) // confirmed pivot high or na

// strategy.entry — opens a position
strategy.entry(
  id        = "Long",           // string label, must match exit from_entry
  direction = strategy.long,    // strategy.long or strategy.short
  qty       = na,               // optional: shares/contracts (na = use strategy default)
  comment   = "Entry signal"    // optional: shows in Strategy Tester
)

// strategy.exit — closes with SL/TP
strategy.exit(
  id         = "Exit Long",
  from_entry = "Long",          // MUST match the entry id exactly
  stop       = close * 0.985,   // stop loss price level (not percentage)
  limit      = close * 1.030,   // take profit price level (not percentage)
  comment    = "SL/TP"
)

// strategy.close — close position by entry id without SL/TP
strategy.close("Long", comment="Exit signal")

// Correct v6 input syntax
int    fastLen  = input.int(defval=9,    title="Fast EMA",    minval=1,    group="Settings")
int    slowLen  = input.int(defval=21,   title="Slow EMA",    minval=1,    group="Settings")
float  stopPct  = input.float(defval=1.5, title="Stop Loss %", minval=0.1, step=0.1, group="Risk")
bool   useShort = input.bool(defval=false, title="Enable Shorts", group="Settings")
string maType   = input.string(defval="EMA", title="MA Type", options=["EMA","SMA","WMA"], group="Settings")

// WRONG — do not use label= (does not exist in v6)
int x = input.int(defval=9, label="Fast EMA")  // compile error

// Correct multi-timeframe pattern
float dailyClose = request.security(
  symbol    = syminfo.tickerid,
  timeframe = "D",
  expression = close[1],           // [1] = confirmed close, not current bar
  gaps      = barmerge.gaps_off,
  lookahead = barmerge.lookahead_off
)

// Access daily RSI for a higher-timeframe filter
float dailyRsi = request.security(syminfo.tickerid, "D", ta.rsi(close, 14)[1],
    gaps=barmerge.gaps_off, lookahead=barmerge.lookahead_off)

// alertcondition — registers for manual setup in TradingView Alerts
alertcondition(longCondition,  title="Long Entry",  message="Long signal on {{ticker}}")
alertcondition(shortCondition, title="Short Entry", message="Short signal on {{ticker}}")

// alert() — can be inside if blocks, fires automatically
if longCondition
    alert("Long entry — " + syminfo.ticker + " @ " + str.tostring(close), alert.freq_once_per_bar)