The document discusses the different tags used in JSP to embed dynamic content into HTML pages, including scriptlet tags, declaration tags, expression tags, directive tags, and action tags. It provides details on what each tag is used for, such as scriptlet tags containing code in the _jspService() method, declaration tags defining data members and methods, expression tags writing strings to the output stream, and directive tags providing translation information. It also discusses specific action tags like <jsp:forward> and <jsp:include>.