- :upcase - convert to upper case.
- :downcase - convert to lower case.
- :capitalize - convert the first letter of words to upper case and the
- rest of the word to lower case.
- :capitalize-first - convert the first letter of the first word to upper
- case and everything else to lower case."
+ :UPCASE - convert to upper case.
+ :DOWNCASE - convert to lower case.
+ :CAPITALIZE - convert the first letter of words to upper case and the
+ rest of the word to lower case.
+ :CAPITALIZE-FIRST - convert the first letter of the first word to upper
+ case and everything else to lower case."