ELI5: Explain Like I'm 5

CODEN

Coden is a way to name a computer program or programing language. Coden is made up of two parts: the prefix which is a four letter word and the suffix which is either a three letter code or a number. The four letter prefix stands for the language or program that the code is written in and the prefix and suffix combined give a unique identifier to the code. For example, a computer program written in Java would have a coden starting with "JAVA" and ending with a letter or number to make it unique.