Help me to understand documentation comments

Answer 1

Code documentations are documents created to explain how your code works and why your code is written. Documentation comments are comments written in your codes which serves the purpose of code documentation.

Answer 2

Comments are used to help you and the others read and interprete the code... So if you forget about what does a line of code do, it will be easier to remember... As you know, they are not shown to the output...