anchor.diff:    p There are number of differences between WHATWG HTML Standard and W3C HTML 5.1. At the time of writing this, the differences include:
     ul
       li <code>hgroup</code>
  -    li <code>blockquote</code>
  +    li <code>blockquote</code> and <code>cite</code>
       li <code>main</code>
       li <code>a[ping]</code>
       li <code>ruby</code>
  -    li <code>cite</code>
  +    li requirements for alternative texts of images
       li <code>iframe[seamless]</code>
       li <code>xml:base</code>
  +    li <code>DataCue</code>
       li Table sorting model
       li <code>input[type="datetime-local"]</code> and <code>input[type="datetime"]</code>
       li Canvas 2D Context
  +    li Common idioms without dedicated elements
       li Microdata
  +    li worker modules
       li <code>requestAnimationFrame</code>
  +    li Web Messaging
       li Sever-sent events
  -    li <code>postMessage</code> and <code>onmessage</code>
       li Web Sockets API
       li Web Workers
       li Web Storage
  -    li requirements for alternative texts of images
       li <code>showModalDialog</code>
     p I can’t remember the differences. Thus I created this site.
     
  
positive.code:   h3 Modifications applied to both WAHTWG HTML Standard and W3C HTML 5.1
    ul
      li Normalize white spaces
      li Remove start and end tags of <code>a</code>, <code>em</code>, <code>strong</code>, <code>small</code>, <code>s</code>, <code>cite</code>, <code>q</code>, <code>dfn</code>, <code>abbr</code>, <code>data</code>, <code>time</code>, <code>code</code>, <code>var</code>, <code>samp</code>, <code>kbd</code>, <code>i</code>, <code>b</code>, <code>u</code>, and <code>mark</code>.
      li Sort attributes alphabetically
      li Remove <code>data-*</code> attributes
      li Remove <code>id</code> attribute
  
negative.code:   h3 Modifications applied to W3C HTML 5.1
    ul
      li Replace “’” with “'”
      li Replace “Plugin Content Handlers” with “Plugins”
      li Replace “Color” with “Colour” excepting “type=color”
      li Replace “A link or button containing nothing but an image” with “A link or button containing nothing but the image”
      li Replace “Images of text” with “Text that has been rendered to a graphic for typographical effect”
      li Replace “Synchronizing” with “Synchronising”
      li Replace “implementation notes” with “Implementation notes”
      li Replace “behaviors” with “behaviours”
      li Replace “Serializing” with “Serialising”
      li Reorder “Links” in “The elements of HTML”
      li Reorder “Calling scripts” in “Processing model”
  
    h2 Q. Are HTMLs displayed in this site same as the specifications?
    p No. This site reformats HTMLs to reduce unnecessary diffs.
  