1 2======================== 3Expression: id('chapter1') 4Object is a Node Set : 5Set contains 1 nodes: 61 ELEMENT chapter 7 ATTRIBUTE id 8 TEXT 9 content=chapter1 10 11======================== 12Expression: id('chapter3') 13Object is a Node Set : 14Set contains 1 nodes: 151 ELEMENT chapter 16 ATTRIBUTE id 17 TEXT 18 content=chapter3 19 20======================== 21Expression: id('chapter1')/p 22Object is a Node Set : 23Set contains 4 nodes: 241 ELEMENT p 252 ELEMENT p 263 ELEMENT p 274 ELEMENT p 28 29======================== 30Expression: id('chapter1')//p 31Object is a Node Set : 32Set contains 4 nodes: 331 ELEMENT p 342 ELEMENT p 353 ELEMENT p 364 ELEMENT p 37 38======================== 39Expression: id('chapter1')/p[1] 40Object is a Node Set : 41Set contains 1 nodes: 421 ELEMENT p 43