The Equal(xmlTree1, xmlTree2) command test whether two XML trees are the same.

The arguments must be correctly formed XML tree data structures. One of the values true and false is returned.

$\mathrm{with}\left(\mathrm{XMLTools}\right)\:$

$\mathrm{xmlTree1}≔\mathrm{XMLElement}\left(''a''\,\left[''colour''=''red''\,''size''=''10''\right]\,\mathrm{XMLElement}\left(''b''\,\left[''colour''=''blue''\right]\,''text''\right)\right)\:$

$\mathrm{Print}\left(\mathrm{xmlTree1}\right)$

<a colour = 'red' size = '10'>
  <b colour = 'blue'>text</b>
</a>

$\mathrm{xmlTree2}≔\mathrm{XMLElement}\left(''a''\&comma;\left[''colour''=''red''\&comma;''size''=''10''\right]\&comma;\mathrm{XMLElement}\left(''b''\&comma;\left[''colour''=''blue''\right]\&comma;''text''\right)\right)\&colon;$

$\mathrm{Print}\left(\mathrm{xmlTree2}\right)$

<a colour = 'red' size = '10'>
  <b colour = 'blue'>text</b>
</a>

$\mathrm{xmlTree3}≔\mathrm{ParseString}\left(''text''\right)\&colon;$

$\mathrm{Print}\left(\mathrm{xmlTree3}\right)$

  <a colour = 'red' size = '10'>
    <b colour = 'blue'>text</b>
  </a>

$\mathrm{evalb}\left(\mathrm{xmlTree1}=\mathrm{xmlTree2}\right)$

$\mathrm{true}$

$\mathrm{Equal}\left(\mathrm{xmlTree1}\&comma;\mathrm{xmlTree2}\right)$

$\mathrm{true}$

$\mathrm{evalb}\left(\mathrm{xmlTree1}=\mathrm{xmlTree3}\right)$

$\mathrm{false}$

$\mathrm{Equal}\left(\mathrm{xmlTree1}\&comma;\mathrm{xmlTree3}\right)$

$\mathrm{false}$