Edits [Robin’s HTML 4.0 Conformance Test]
Author: Lionheart, Robin
Description: Test your Web browser’s support for revision tracking elements. Part of Robin’s HTML 4.0 Conformance Test.

# Edits (§9.4)

## Changes

The `<ins>` and `<del>` elements mark insertions and deletions, to track changes between versions of a document.

XHTML 2.0: The W3C is considering replacing `<ins>` and `<del>` in XHTML 2.0 with a common `edit` attribute, which can also mark changed and moved content. The `edit` attribute is better designed to fulfill the needs of revision tracking than `<ins>` and `<del>`, which seem like ill‐considered semantic replacements for the deprecated `<u>` and `<s>` elements.

### Example:

Neil Armstrong, taking the first human step on the moon, said, <q>That&rsquo;s one small step for <del>Man</del><ins>a man</ins>, one giant leap for mankind.</q>

#### Your Web browser renders it like this:

Neil Armstrong, taking the first human step on the moon, said, That’s one small step for Mana man, one giant leap for mankind.

### Example:

<blockquote title="The Galaxy Song">
<p>Just remember that you&rsquo;re standing on a planet that&rsquo;s evolving,
<br>revolving at <del>900</del><ins>1,000</ins> miles an hour,
<br>It&rsquo;s orbiting at <del>19</del><ins>18</ins> miles a second, so it&rsquo;s reckoned,
<br>a sun that is the source of all our power.
<br>The sun and you and me, and all the stars that we can see,
<br>are moving <del>at a</del><ins>13</ins> million miles a day,
<br>In an outer spiral arm, at <del>40,000</del><ins title="540,000">half a million</ins> miles an hour,
<br>of the galaxy we call the Milky Way.</p>
<p>Our galaxy itself contains <del>100</del><ins>400</ins> billion stars,
<br>it&rsquo;s 100,000 light-years side-to-side,
<br>It bulges in the middle, <del>16</del><ins>15</ins>,000 light-years thick,
<br>but out by us it&rsquo; just 3,000 light-years wide.
<br>We&rsquo;re 30,000 light-years from galactic central point,
<br>we go round every <del>200</del><ins>one quarter</ins> million years,
<br>And our galaxy is only one of millions of billions
<br>in this amazing and expanding universe.</p>
<p>The universe itself keeps on expanding and expanding,
<br>in all of the directions it can whiz,
<br>As fast as it can go, the speed of light you know,
<br><del>12 million miles a minute</del><ins title="186,000">one eight six thousand miles a second</ins>, and that&rsquo;s the fastest speed there is.
<br>So remember, when you&rsquo;re feeling very small and insecure,
<br>how amazingly unlikely is your birth,
<br>And pray that there&rsquo;s intelligent life somewhere up in space,
<br>&rsquo;cause there&rsquo;s bugger all down here on Earth.</p>
</blockquote>

#### Your Web browser renders it like this:

> Just remember that you’re standing on a planet that’s evolving,
> revolving at 9001,000 miles an hour,
> It’s orbiting at 1918 miles a second, so it’s reckoned,
> a sun that is the source of all our power.
> The sun and you and me, and all the stars that we can see,
> are moving at a13 million miles a day,
> In an outer spiral arm, at 40,000half a million miles an hour,
> of the galaxy we call the Milky Way.

> Our galaxy itself contains 100400 billion stars,
> it’s 100,000 light-years side-to-side,
> It bulges in the middle, 1615,000 light-years thick,
> but out by us it’s just 3,000 light-years wide.
> We’re 30,000 light-years from galactic central point,
> we go round every 200one quarter million years,
> And our galaxy is only one of millions of billions
> in this amazing and expanding universe.

> The universe itself keeps on expanding and expanding,
> in all of the directions it can whiz,
> As fast as it can go, the speed of light you know,
> 12 million miles a minuteone eight six thousand miles a second, and that’s the fastest speed there is.
> So remember, when you’re feeling very small and insecure,
> how amazingly unlikely is your birth,
> And pray that there’s intelligent life somewhere up in space,
> ’cause there’s bugger all down here on Earth.

## Date and time

The `datetime` attribute specifies the date of the revision.

### Example:

As of <del datetime="2010-04-15T08:00:00">18 December 1998</del><ins datetime="2010-04-15T08:00:00">15 April 2010</ins>, no Web browser fully supports the <del datetime="2010-04-15T08:00:00">one</del><ins datetime="2010-04-15T08:00:00">twelve</ins> year old standard.

#### Your Web browser renders it like this:

As of 18 December 199815 April 2010, no Web browser fully supports the onetwelve year old standard.

Related Mozilla bug reports: Metadata.

## Explanatory links

`<ins>` and `<del>` can also mark revisions to blocks of mark up.

The `cite` attribute provides a link to more information about a revision.

### Example:

#### This revision links to “Why ‘click here’ is bad linking practice” as a reason for the change:

<del cite="http://www.cs.tut.fi/~jkorpela/www/click.html"><p><a href="http://www.lungusa.org/diseases/lungpneumoni.html">Click here</a> for more information about pneumonia.</p></del>
<ins cite="http://www.cs.tut.fi/~jkorpela/www/click.html"><p>The American Lung Association has <a href="http://www.lungusa.org/diseases/lungpneumoni.html">more information about pneumonia</a>.</p></ins>

#### Your Web browser renders it like this:

Click here for more information about pneumonia.

The American Lung Association has more information about pneumonia.

Related Mozilla bug reports: Del-Only-Inline, Metadata.

## Your Browser

Your Web browser identified itself as `Wget/1.11.4` when it requested this page.