{
  "function": "rpad",
  "description": "Returns a string padded to supplied width using a fill character.",
  "arguments": [ {"arg":"string","description":"string to pad"},
  {"arg":"width","description":"length of new string"},
  {"arg":"fill","description":"character to pad the remaining space with"}
  ],
  "examples": [ { "expression":"rpad('Hello', 10, 'x')", "returns":"'xxxxxHello'"}
  ]
}