upper

>>-upper(+---+--+---------+---)----------------------><
         +-n-+  +-,length-+

Returns a new string with the characters of the target string beginning with character [n] for [length] characters converted to uppercase. If [n] is specified, it must be a positive whole number. If [n] is not specified, the case conversion will start with the first character. If [length] is specified, it must be a non-negative whole number. If [length] the default is to convert the remainder of the string.

String class - upper method

"Albert Einstein"~upper      ->    "ALBERT EINSTEIN"
"abcdef"~upper(4)            ->    "abcDEF"
"abcdef"~upper(3,2)          ->    "abCDef"