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 <strong> tag is a phrase tag. It defines important text. Tip: This tag is not deprecated, but it is possible to achieve richer effect with CSS. All phrase tags: In HTML 4.01, the <strong> tag defines strong emphasized text, but in HTML5 it defines important text. The <strong> tag also supports the Global Attributes in HTML. The <strong> tag also supports the Event Attributes in HTML.