Wipe, in a computing context, means  to render all data on a hard drive unreadable. The term is often used in reference to making data stored on a computer, smartphone or tablet inaccessible before disposing of the device.
A semantic HTML tag is one that defines a meaning to the enclosed content that a computer can be programmed to understand. In most cases, browsers create some visual difference to content in semantic tags, for example, content in the CODE element is usually displayed in a monospaced font. But this is not a requirement. Many people feel that semantic HTML elements are a waste of bandwidth.
HTML comment tags are an important part of HTML because they allow you to put notes to yourself and even hide HTML code so the browser doesn't display it. Difficulty: Easy. Time Required: 1 minute. Here's How: 1  Add the first HTML comment tag:2  Write the text or information you want hidden.TML comment tags are an important part of HTML because they allow you to put notes to yourself and even hide HTML code so the browser doesn't display it. Difficulty: Easy. Time Required: 1 minute. Here's How: 1  Add the first HTML comment tag: