#data
<button xmlns="http://www.w3.org/1999/xhtml"></button>
#errors
/button;no significant content;s

#data
<button xmlns="http://www.w3.org/1999/xhtml">  </button>
#errors
/button;no significant content;s

#data
<button xmlns="http://www.w3.org/1999/xhtml">xx</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"><br/></button>
#errors
/button;no significant content;s

#data
<button xmlns="http://www.w3.org/1999/xhtml"><ins/></button>
#errors
/button/ins;no significant content;s

#data
<button xmlns="http://www.w3.org/1999/xhtml"><em/></button>
#errors
/button/em;no significant content;s

#data
<button xmlns="http://www.w3.org/1999/xhtml">aa<span>bb</span></button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"><p/></button>
#errors
/button/p;no significant content;s
/button/p;element not allowed:phrasing;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"><video src="a"/></button>
#errors
/button/video;no significant content;s

#data
<button xmlns="http://www.w3.org/1999/xhtml"><style scoped=""/>x</button>
#errors
/button/style;element not allowed:phrasing;m
/button/style/@scoped;attr:obsolete;m

#data
<em xmlns="http://www.w3.org/1999/xhtml"><button>x</button></em>
#errors

#data
<em xmlns="http://www.w3.org/1999/xhtml"><button></button></em>
#errors
/em/button;no significant content;s

#data
<div xmlns="http://www.w3.org/1999/xhtml"><button>x</button></div>
#errors

#data
<ins xmlns="http://www.w3.org/1999/xhtml"><button>x</button></ins>
#errors

#data
<em xmlns="http://www.w3.org/1999/xhtml"><ins><button>x</button></ins></em>
#errors

#data
<br xmlns="http://www.w3.org/1999/xhtml"><button>x</button></br>
#errors
/br/button;element not allowed:empty;m

#data
<title xmlns="http://www.w3.org/1999/xhtml"><button>x</button></title>
#errors
/title/button;element not allowed:text;m

#data
<em xmlns="http://www.w3.org/1999/xhtml"><button>x<nest/></button></em>
#errors
/em/button/nest;element not allowed:phrasing;m
/em/button/nest;element:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"><img src="b" alt="x"/></button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"><span>x</span></button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"><p>x</p></button>
#errors
/button/p;element not allowed:phrasing;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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>x</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors

#data
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#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
<button type="delete" xmlns="http://www.w3.org/1999/xhtml">x</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@type;enumerated:invalid;m

#data
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#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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>x</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
    disabled="disabled"
>x</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
    disabled="DISABLED"
>x</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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>x</button>
#errors
/button/@disabled;boolean:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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#errors
/button/@disabled;boolean:invalid;m

#data escaped
<button xmlns="http://www.w3.org/1999/xhtml"
    disabled="d\u0130sabled"
>x</button>
#errors
/button/@disabled;boolean:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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>x</button>
#errors
/button/@disabled;boolean:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
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>x</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
    autofocus="autofocus"
>x</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
    autofocus="AutoFocus"
>x</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml"
    autofocus=" autofocus"
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#errors
/button/@autofocus;boolean:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
    autofocus="yes"
>x</button>
#errors
/button/@autofocus;boolean:invalid;m

#data
<form xmlns="http://www.w3.org/1999/xhtml"><button
    value=""
>x</button></form>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    action=""
>a</button>
#errors
/button/@action;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@action;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@action;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@action;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@action;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method=""
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method="POST"
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method="put"
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method="get "
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method="getall"
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method="push"
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    method="method"
>a</button>
#errors
/button/@method;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype=""
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype="application/x-www-form-urlencoded"
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype="APPLICATION/X-WWW-FORM-URLENCODED"
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype="application/x-url-encoded"
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype="application/x-sgml-urlencoded"
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype="enctype"
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    enctype="application/xml"
>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    target=""
>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    target="_top"
>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    target="new"
>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@target;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    novalidate=""
>a</button>
#errors
/button/@novalidate;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    novalidate="novalidate"
>a</button>
#errors
/button/@novalidate;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@novalidate;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@novalidate;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors
/button/@novalidate;attr:obsolete;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formaction=""
>a</button>
#errors
/button/@formaction;url:empty;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formaction="http://www.w3.org/"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formaction="test"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formaction="#test"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formaction="[]"
>a</button>
#errors
/button/@formaction;syntax error:iriref3987;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod=""
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
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>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="GET"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="post"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="POST"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="put"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="PUT"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="delete"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="DELETE"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="GEt"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="deleTE"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="head"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="m-get"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="get "
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="getall"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="push"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="formmethod"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="dialog"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="DIALOG"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formmethod="dialogue"
>a</button>
#errors
/button/@formmethod;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype=""
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="application/x-www-form-urlencoded"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="APPLICATION/X-WWW-FORM-URLENCODED"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="Application/x-www-form-urlencoded"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="multipart/form-data"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="Multipart/Form-Data"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="text/plain"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="TEXT/plain"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="application/x-url-encoded"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data escaped
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="text/pla\u0130n"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data escaped
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="text/pla\u0131n"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="application/x-sgml-urlencoded"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="application/x-www-form-urlencoded; charset=utf-8"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype=" text/plain "
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="image/png"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="formenctype"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="multipart/related"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="application/xml"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="text/xml"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formenctype="text/html"
>a</button>
#errors
/button/@formenctype;enumerated:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget=""
>a</button>
#errors
/button/@formtarget;window name:empty;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_blank"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_self"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_parent"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_top"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="new"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="result"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_BLANK"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_SElf"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_new"
>a</button>
#errors
/button/@formtarget;window name:reserved;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_blank "
>a</button>
#errors
/button/@formtarget;window name:reserved;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_new window"
>a</button>
#errors
/button/@formtarget;window name:reserved;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="new window"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_content"
>a</button>
#errors
/button/@formtarget;window name:reserved;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_replace"
>a</button>
#errors
/button/@formtarget;window name:reserved;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formtarget="_search"
>a</button>
#errors
/button/@formtarget;window name:reserved;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formnovalidate=""
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formnovalidate="formnovalidate"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formnovalidate="Formnovalidate"
>a</button>
#errors

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formnovalidate="yes"
>a</button>
#errors
/button/@formnovalidate;boolean:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formnovalidate="novalidate"
>a</button>
#errors
/button/@formnovalidate;boolean:invalid;m

#data
<button type="submit" xmlns="http://www.w3.org/1999/xhtml"
    formnovalidate="no validate"
>a</button>
#errors
/button/@formnovalidate;boolean:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml">
  aaa
  <input/>
</button>
#errors
/button/input;element not allowed:minus;m

#data
<button xmlns="http://www.w3.org/1999/xhtml">
  aaa
  <input type="hidden"/>
</button>
#errors

#data
<button xmlns="http://www.w3.org/1999/xhtml">
  aaa
  <a href="">bbb</a>
</button>
#errors
/button/a;element not allowed:minus;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  formaction=""
>x</button>
#errors
/button/@formaction;attribute not allowed;m
/button/@formaction;url:empty;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  formenctype="application/x-www-form-urlencoded"
>x</button>
#errors
/button/@formenctype;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  formmethod="get"
>x</button>
#errors
/button/@formmethod;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  formtarget="_blank"
>x</button>
#errors
/button/@formtarget;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  formnovalidate=""
>x</button>
#errors
/button/@formnovalidate;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  action=""
>x</button>
#errors
/button/@action;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  enctype="application/x-www-form-urlencoded"
>x</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  method="get"
>x</button>
#errors
/button/@method;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  target="_blank"
>x</button>
#errors
/button/@target;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  formaction=""
>x</button>
#errors
/button/@formaction;attribute not allowed;m
/button/@formaction;url:empty;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  formenctype="application/x-www-form-urlencoded"
>x</button>
#errors
/button/@formenctype;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  formmethod="get"
>x</button>
#errors
/button/@formmethod;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  formtarget="_blank"
>x</button>
#errors
/button/@formtarget;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  formnovalidate=""
>x</button>
#errors
/button/@formnovalidate;attribute not allowed;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  action=""
>x</button>
#errors
/button/@action;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  enctype="application/x-www-form-urlencoded"
>x</button>
#errors
/button/@enctype;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  method="get"
>x</button>
#errors
/button/@method;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  target="_blank"
>x</button>
#errors
/button/@target;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="xyz"
  formaction=""
>x</button>
#errors
/button/@type;enumerated:invalid;m
/button/@formaction;url:empty;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="xyz"
  formenctype="application/x-www-form-urlencoded"
>x</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="xyz"
  formmethod="get"
>x</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="xyz"
  formtarget="_blank"
>x</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="xyz"
  formnovalidate=""
>x</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="BUTTON"
  target="_blank"
>x</button>
#errors
/button/@target;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="ReSet"
  target="_blank"
>x</button>
#errors
/button/@target;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="Add"
  target="_blank"
>x</button>
#errors
/button/@target;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="submit"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="Submit"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="add?"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="button"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="reset"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="move-up"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="move-down"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="remove"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="delete"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="add"
  template="a"
>x</button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m

#data
<button xmlns="http://www.w3.org/1999/xhtml"
  type="add"
  template="a"
><span repeat="template" id="a">x</span></button>
#errors
/button/@template;attr:obsolete;m
/button/@type;enumerated:invalid;m
/button/span/@repeat;attr:obsolete;m

#data
<button type="menu" xmlns="http://www.w3.org/1999/xhtml">a</button>
#errors
/button/@type;enumerated:invalid;m

#data
<button type="MeNU" menu="" xmlns="http://www.w3.org/1999/xhtml">a</button>
#errors
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m

#data
<button type="MeNU" menu="abc" xmlns="http://www.w3.org/1999/xhtml">a</button>
#errors
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m

#data
<button type="menu" menu="foo" xmlns="http://www.w3.org/1999/xhtml"><span id="foo">a</span></button>
#errors
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m

#data
<button type="menu" menu="foo" xmlns="http://www.w3.org/1999/xhtml"><menu id="foo">a</menu></button>
#errors
/button;no significant content;s
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m
/button/menu;element not allowed:phrasing;m
/button/menu/"a";character not allowed;m

#data
<button type="menu" menu="foo" xmlns="http://www.w3.org/1999/xhtml"><menu id="foo" type="toolbar">a</menu></button>
#errors
/button;no significant content;s
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m
/button/menu;element not allowed:phrasing;m
/button/menu/@type;attr:obsolete;m
/button/menu/"a";character not allowed;m

#data
<button type="menu" menu="foo" xmlns="http://www.w3.org/1999/xhtml"><menu id="foo" type="context"></menu>x</button>
#errors
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m
/button/menu;element not allowed:phrasing;m
/button/menu/@type;attr:obsolete;m

#data
<button type="menu" menu="foo" xmlns="http://www.w3.org/1999/xhtml"><menu type="context"><menu id="foo"></menu></menu>x</button>
#errors
/button/@type;enumerated:invalid;m
/button/@menu;attr:obsolete;m
/button/menu;element not allowed:phrasing;m
/button/menu/@type;attr:obsolete;m
/button/menu/menu;element not allowed;m

#data
<div xmlns="http://www.w3.org/1999/xhtml">
  <menu type="context" id="ab cd"></menu>
  <button type="menu" menu="ab cd">a</button>
</div>
#errors
/div/menu/@id;space in ID;m
/div/menu/@type;attr:obsolete;m
/div/button/@type;enumerated:invalid;m
/div/button/@menu;attr:obsolete;m

#data
<div xmlns="http://www.w3.org/1999/xhtml">
  <menu type="context" id="abcd"></menu>
  <menu type="context" id="abcd"></menu>
  <button type="menu" menu="abcd">a</button>
</div>
#errors
/div/menu/@type;attr:obsolete;m
/div/menu/@id;duplicate ID;m
/div/menu/@type;attr:obsolete;m
/div/button/@type;enumerated:invalid;m
/div/button/@menu;attr:obsolete;m

#data
<div xmlns="http://www.w3.org/1999/xhtml">
  <menu id="abcd"></menu>
  <menu type="context" id="abcd"></menu>
  <button type="menu" menu="abcd">a</button>
</div>
#errors
/div/menu/@id;duplicate ID;m
/div/menu/@type;attr:obsolete;m
/div/button/@type;enumerated:invalid;m
/div/button/@menu;attr:obsolete;m

#data
<div xmlns="http://www.w3.org/1999/xhtml">
  <menu type="context" id="abcd"></menu>
  <button type="button" menu="abcd">a</button>
</div>
#errors
/div/menu/@type;attr:obsolete;m
/div/button/@menu;attr:obsolete;m

#data
<div xmlns="http://www.w3.org/1999/xhtml">
  <menu type="context" id="abcd"></menu>
  <button type="submit" menu="abcd">a</button>
</div>
#errors
/div/menu/@type;attr:obsolete;m
/div/button/@menu;attr:obsolete;m

#data
<div xmlns="http://www.w3.org/1999/xhtml">
  <menu type="context" id="abcd"></menu>
  <button type="Reset" menu="abcd">a</button>
</div>
#errors
/div/menu/@type;attr:obsolete;m
/div/button/@menu;attr:obsolete;m