{
  "name": "format",
  "type": "function",
  "groups": ["String"],
  "description": "Format a string using supplied arguments.",
  "variableLenArguments": true,
  "arguments": [ {"arg":"string", "description":"A string with placeholders %1, %2, etc., for the arguments. Placeholders can be repeated. The lowest numbered placeholder is replaced by arg1, the next by arg2, etc."},
                 {"arg":"arg1", "syntaxOnly": true},
                 {"arg":"arg2", "syntaxOnly": true},
                 {"arg":"arg", "descOnly": true, "description":"any type. Any number of arguments."}],
  "examples": [ { "expression":"format('This %1 a %2','is', 'test')", "returns":"'This is a test'"},
                { "expression":"format('This is %2','a bit unexpected but 2 is lowest number in string','normal')", "returns":"'This is a bit unexpected but 2 is lowest number in string'"} ]
}