Introducation

As explained in the section on structure of Wilbur documents, an HTML document consists of two major sections: HEAD and BODY. Each has its own permitted elements and requirements. The elements themselves can also have requirements about where they may occur, and which elements may occur inside them. This is only important in the BODY section of a document. In here, elements can be grouped in two distinct groups: block level and text level elements. The former make up the document's structure, and the latter "dress up" the contents of a block.