Marker

Marker(key, opts) -> handle

const buyMarker = Marker("buy-signal", {
  x: 10, y: 42000,
  shape: "triangle_up",
  size: 10.0,
  color: "#22c55eFF",
});

Marker("sig", { ..., shape: shape.diamond });

marker.set({ shape: "triangle_up", color: "#22c55eFF" });
marker.clone("buy-signal-2");
marker.delete();

onBar(() => {
  const rsi = ta.rsi(ctx.close, 14);
  if (na(rsi)) return;

  if (ta.crossunder(ta.rsi(ctx.close, 14), 30)) {
    // RSI crossed below 30 - bullish oversold signal
    Marker(`os_${ctx.i()}`, {
      x: ctx.i(),
      y: ctx.low() * 0.998,
      shape: "arrow_up",
      size: 12,
      color: "#22c55eFF",
    });
  }
});