End, or stop tags are indicated by this leading slash character. Some elements are empty , that is, they do not affect a block of the document in some way. These elements do not require an ending tag . These are examples of separator commands. Upper and Lower Case Element names are case insensitive .
Many elements can have arguments that pass parameters to the interpreter handling the element.
The arguments are called attributes of the element. This element can have several attributes. One of them, HREF, specifies the hypertext document to which the marked piece of text is linked. This is an example of a container command where the HTML command is applied to the text in-between the start and end tags. Therefore, HTML allows you to mark selections of text as titles or paragraphs, and then leaves the interpretation of these marked elements up to the browser.