  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                      ^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                      ^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                                      ^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                                      ^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                                           ^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests9_dat.3.html:1:1]
 1 | <!DOCTYPE html><math><annotation-xml><svg><u>
   :                                           ^^^
   `----
