$  xmllint.exe --shell madbee.xml
/ > cat //Article/Main/Sect/H4
 -------
<H4>Include</H4>
/ >
/ >
/ > cat ( //Article/Main/Sect/H3 | //Article/Main/Sect/H4 )
 -------
<H4>Include</H4>
/ >
/ >
/ > cat ( //Article/Main/Sect/H3 | //Article/Main/Sect/H4 )[ contains(.,'Include' ) ]
 -------
<H4>Include</H4>
/ >
/ >
/ > cat ( //Article/Main/Sect/H3 | //Article/Main/Sect/H4 )[ contains(.,'Include' ) ]/..//LI_Title
 -------
<LI_Title>Critera 1</LI_Title>
 -------
<LI_Title>Critera 2</LI_Title>
 -------
<LI_Title>Critera 3</LI_Title>
 -------
<LI_Title>Critera 3</LI_Title>
/ >
/ >
/ >
/ > cat ( //Article/Main/Sect/H3 | //Article/Main/Sect/H4 )[ contains(.,'Junk' ) ]/..//LI_Title
/ >
/ >
/ >
/ > bye

$