  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.4.html:1:1]
 1 | <!DOCTYPE html><html 123=456>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.4.html:1:1]
 1 | <!DOCTYPE html><html 123=456>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.4.html:1:1]
 1 | <!DOCTYPE html><html 123=456>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.4.html:1:1]
 1 | <!DOCTYPE html><html 123=456>
   :                ^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.4.html:1:1]
 1 | <!DOCTYPE html><html 123=456>
   :                ^^^^^^^^^^^^^^
   `----
  x Attribute
   ,-[$DIR/tests/html5lib-tests-fixture/tests14_dat.4.html:1:1]
 1 | <!DOCTYPE html><html 123=456>
   :                      ^^^^^^^
   `----
  x Child
  x Element
