The term URL PUNCTUATION MARK is referring to the SLASH (/) symbol. This symbol is used in Uniform Resource Locators (URLs) to separate different parts of a web address. It is also known as a forward SLASH, and is used to indicate a division between two elements. The SLASH is an important part of the syntax of a URL, and is used to separate the protocol from the domain name, as well as the directory path from the page name.