1
//- - - - - - - - -//
## Title 0

## Title1 # {#id_1 .class-1}

## Title2 {#id_2}

## Title3 ## {#id_3 .class-3}

## Title4 ## {data-attr3=value3}

## Title5 ## {#id_5 data-attr5=value5}

## Title6 ## {#id_6 .class6 data-attr6=value6}

## Title7 ## {#id_7 data-attr7="value \"7"}

## Title8 {#id .className data-attrName=attrValue class="class1 class2"}
//- - - - - - - - -//
<h2 id="title-0">Title 0</h2>
<h2 id="id_1" class="class-1">Title1</h2>
<h2 id="id_2">Title2</h2>
<h2 id="id_3" class="class-3">Title3</h2>
<h2 data-attr3="value3" id="title4">Title4</h2>
<h2 id="id_5" data-attr5="value5">Title5</h2>
<h2 id="id_6" class="class6" data-attr6="value6">Title6</h2>
<h2 id="id_7" data-attr7="value &quot;7">Title7</h2>
<h2 id="id" class="className class1 class2" data-attrName="attrValue">Title8</h2>
//= = = = = = = = = = = = = = = = = = = = = = = =//

2
//- - - - - - - - -//
#
# FOO
//- - - - - - - - -//
<h1 id="heading"></h1>
<h1 id="foo">FOO</h1>
//= = = = = = = = = = = = = = = = = = = = = = = =//