[
  {"op": "doc", "text": "NY-session-gated blend of three SMA spreads via a LinComb(arity 3); sweepable session period"},
  {"op": "source", "role": "price", "kind": "F64"},
  {"op": "add", "type": "SMA", "name": "a", "bind": {"length": {"I64": 2}}},
  {"op": "add", "type": "SMA", "name": "b", "bind": {"length": {"I64": 5}}},
  {"op": "add", "type": "SMA", "name": "c", "bind": {"length": {"I64": 10}}},
  {"op": "feed", "role": "price", "into": ["a.series", "b.series", "c.series"]},
  {"op": "add", "type": "Sub", "name": "sA"},
  {"op": "connect", "from": "a.value", "to": "sA.lhs"},
  {"op": "connect", "from": "c.value", "to": "sA.rhs"},
  {"op": "add", "type": "Sub", "name": "sB"},
  {"op": "connect", "from": "b.value", "to": "sB.lhs"},
  {"op": "connect", "from": "c.value", "to": "sB.rhs"},
  {"op": "add", "type": "Sub", "name": "sC"},
  {"op": "connect", "from": "a.value", "to": "sC.lhs"},
  {"op": "connect", "from": "b.value", "to": "sC.rhs"},
  {"op": "add", "type": "LinComb", "name": "lc", "args": {"arity": "3"},
   "bind": {"weights[0]": {"F64": 0.5}, "weights[1]": {"F64": 0.3}, "weights[2]": {"F64": 0.2}}},
  {"op": "connect", "from": "sA.value", "to": "lc.term[0]"},
  {"op": "connect", "from": "sB.value", "to": "lc.term[1]"},
  {"op": "connect", "from": "sC.value", "to": "lc.term[2]"},
  {"op": "add", "type": "Session", "name": "sess",
   "args": {"tz": "America/New_York", "open": "09:30"}},
  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
  {"op": "add", "type": "EqConst", "name": "insession", "bind": {"target": {"I64": 1}}},
  {"op": "connect", "from": "sess.bars_since_open", "to": "insession.value"},
  {"op": "add", "type": "When", "name": "gated"},
  {"op": "connect", "from": "lc.value", "to": "gated.value"},
  {"op": "connect", "from": "insession.value", "to": "gated.gate"},
  {"op": "add", "type": "Bias", "name": "bias", "bind": {"scale": {"F64": 1.0}}},
  {"op": "connect", "from": "gated.value", "to": "bias.signal"},
  {"op": "expose", "from": "bias.bias", "as": "bias"}
]