<?xml version="1.0"?>
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
  <label style="text-align: start; direction: ltr" value="This is a test"/>
  <label style="text-align: start; direction: rtl" value="This is a test"/>
  <label style="text-align: left; direction: ltr" value="This is a test"/>
  <label style="text-align: left; direction: rtl" value="This is a test"/>
  <label style="text-align: right; direction: ltr" value="This is a test"/>
  <label style="text-align: right; direction: rtl" value="This is a test"/>
  <label style="text-align: end; direction: ltr" value="This is a test"/>
  <label style="text-align: end; direction: rtl" value="This is a test"/>
</window>