1. What does DTD stand for?
2. What is the purpose of a DTD?
3. What is the meaning of this declaration in a DTD: <!ELEMENT to (#PCDATA)>?
4. What is the meaning of this declaration in a DTD: <!ELEMENT book (title, author, price, year)>
5. What is the meaning of this declaration in a DTD: <!ELEMENT bookstore ((cd | book)+)>

solutions