Final answer:
In programming, the hash symbol (#) is used to create a comment line that the script will not execute. This is common in many languages, such as Python, to indicate that the text is a note or description for the coder, and not an instruction for the interpreter or compiler.
Step-by-step explanation:
In programming, to inform the script to not execute a line, you typically use a comment symbol. The symbol used for creating a comment depends on the programming language. For many scripting and programming languages, such as Python, the hash symbol (#) is used to start a comment, which means that any text following the '#' on that line will be ignored by the interpreter or compiler and not executed as part of the program.