<optgroup>
<optiongroup>
<group>
<selectgroup>
makes text Bold
makes Text Italic
makes Text Underline
None of these
POST
GET
NONE
PUT
photo
picture
file
upload
mandatory
required
validate
mustfill
href="_blank"
open="new"
target="_blank"
new="tab"
<!-- comment -->
// comment
/* comment */
# comment
borderspacing
cellpadding
cellspacing
colspan
<ol>
<ul>
<li>
<item>
<dt>
<dl>
<dd>
value
method
type
action
placeholder
id
name
Styling Pages
Providing Information about Web Pages
Executing Scripts
Database Queries
number
range
slider
progress
focus
autofocus
auto
active
regex
pattern
match
require
play
controls
media
autoplay
<menu>
<link>
<nav>
<sidebar>
Supported in HTML5
Deprecated in HTML5
Required in HTML5
Used for multimedia
