QGIS/resources/function_help/json/op_lt

{
  "name": "<",
  "type": "operator",
  "description": "Compares two values and evaluates to 1 if the left value is less than the right value.",
  "arguments": [
        { "arg": "a", "description": "value" },
        { "arg": "b", "description": "value" }
  ],
  "examples": [
	{ "expression":"5 &lt; 4", "returns":"0"},
	{ "expression":"5 &lt; 5", "returns":"0"},
	{ "expression":"4 &lt; 5", "returns":"1"}
  ]
}