The guide

Which page answers your question? Each page below takes one thing a script author asks, answers it first, and gives a script you can paste. Read them in order to learn the language, or go straight to the page your question names.

//@version=6
indicator("Where each line is explained", overlay = true)
int len = input.int(20, "Length", minval = 1)  // Inputs
var int crosses = 0                             // var and varip
float avg = ta.sma(close, len)                  // Functions
bool up = ta.crossover(close, avg)              // Operators
if up                                           // Control flow
    crosses += 1
plot(avg, "Average", color.orange)              // Plots and colours
float d = request.security(syminfo.tickerid, "W",
     close[1], lookahead = barmerge.lookahead_on) // Other symbols
plot(d, "Last week's close", color.gray)

The example is Pine Script. Its last request reads last week's close from each week's first bar with lookahead_on, which AmenoScript refuses: Other symbols has what to write there instead.

Running scripts

• How a script runs: once a bar, and again on each update of the forming bar.
• var and varip: keep a value from one bar, or one update, to the next.

Language

• Script structure: lines, blocks, wrapping, comments and //@version.
• Types, qualifiers and na: what a value can be, what na is, and why a bool is never na.
• Variables: declaring, reassigning, scope and shadowing.
• Operators: compares within 1e-10, division by zero, and x[k].
• Control flow: if, switch, the loops, and blocks that give a value.
• Functions and methods: writing your own, and calling them as methods.
• State in functions and branches: why ta.sma in a function or an if reads differently.
• Types and enums: your own types, objects, copies and enums.
• Collections: arrays, matrices and maps, and when two names share one.
• Strings and formatting: turning numbers into text, and how na and infinity print.

Inputs and data

• Inputs: every input kind, and how a saved setting finds its input.
• Time and sessions: bar times, sessions, time zones and holidays.
• Other symbols and timeframes: another symbol or timeframe, without looking ahead.

Output

• Plots and colours: plots, fills, background and bar colours.
• Drawings and tables: labels, lines, boxes, polylines and tables, and their limits.
• Alerts: alert() and alertcondition().

Strategies

• Strategies: orders, exits, sizing, costs and the Strategy Tester's report.

Working with scripts

• Libraries: share code between scripts.
• Errors and debugging: why a run stopped, and how to see what it's doing.
• Performance: what makes a script fast or slow here.
• Pine compatibility: where a TradingView script reads differently.

See also

• Get started
• AmenoScript: what the terminal adds to Pine
• Reference