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.
The meta description tag in HTML is the 160 character snippet used to summarize a web pageâs content. Search engines sometimes use these snippets in search results to let visitors know what a page is about before they click on it.he meta description tag in HTML is the 160 character snippet used to summarize a web pageâs content. Search engines sometimes use these snippets in search results to let visitors know what a page is about before they click on it.