What is the significance of the hash symbol in computer programming languages?

The hash symbol, also known as the pound sign or hashtag, is used in computer programming languages to indicate comments or metadata. Comments provide explanations or notes within the code for developers to understand the purpose or functionality of the code. Metadata, such as compiler directives or preprocessor commands, can also be denoted by the hash symbol. Overall, the hash symbol plays a crucial role in enhancing code readability and organization in programming languages.