Uppercase Lowercase

The software analyses if text characters (Unicode characters are taken into account) are upper case or lower case and realize the desired transformations.

Example: The message dCode can be converted:
All uppercase: DCODE
All lowercase: dcode
Invert case: DcODE (uppercase to lowercase and lowercase to uppercase)
First letter uppercase: DCode ou Dcode
Support for vowels and consonants dcOdE or DCoDe

Uppercase letters are also called the Capital letters.

Numbers and other non-alphabetic characters are not taken into account when transforming by the upper-lower conversion tool.

In computing, case is the name given to the distinction between uppercase and lowercase characters. Case changing is the term for switching from one case to the other. Also when searching for text, the case can be ignored (a word written in upper or lower case will be treated indifferently).

A steganography technique uses upper and lower case letters to hide and encode information in 0 and 1.

Example: COdE becomes 1101 (or 0010)

Bacon cipher or more generally any binary format can use this method.