{
  "name": "lower",
  "type": "function",
  "groups": ["String"],
  "description": "Converts a string to lower case letters.",
  "arguments": [{
    "arg": "string",
    "description": "the string to convert to lower case"
  }],
  "examples": [{
    "expression": "lower('HELLO World')",
    "returns": "'hello world'"
  }],
  "tags": ["converts", "letters", "lower", "case"]
}