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How do I strike through text (i.e. cross out, or put a line through it) within the Stack Exchange environment?

NB: There are many questions about how to strikeout using different packages, but this question is specifically about how to do it here on this website or on Math.SE.

migrated from tex.stackexchange.com May 8 at 19:29

This question came from our site for users of TeX, LaTeX, ConTeXt, and related typesetting systems.

  • @StevenB.Segletes at math.se or here? – Tim kinsella May 8 at 19:01
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    Use <s>strike through</s>. – siracusa May 8 at 19:02
  • tex meta site is what I had in mind – Steven B. Segletes May 8 at 19:02
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    <s>your text</s> but your question is for Meta. – CarLaTeX May 8 at 19:02
  • ok thanks, should i delete this one? – Tim kinsella May 8 at 19:04
  • No, it will be automatically moved to Meta. – CarLaTeX May 8 at 19:05
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    I got to upvote your comments twice since it was migrated! – Tim kinsella May 8 at 19:50
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Formatting of posts can be done using the visual editor within Stack Exchange, Markdown and some HTML. The latter includes "the following safe, whitelisted subset of HTML tags":

<a>              - hyperlink.
<b>              - bold, use as last resort <h1>-<h3>, <em>, and <strong> are 
                   preferred.
<blockquote>     - specifies a section that is quoted from another source.
<code>           - defines a piece of computer code.
<del>            - delete, used to indicate modifications.
<dd>             - describes the item in a <dl> description list.
<dl>             - description list.
<dt>             - title of an item in a <dl> description list.
<em>             - emphasized.
<h1>, <h2>, <h3> - headings.
<i>              - italic.
<img>            - specifies an image tag.
<kbd>            - represents user input (usually keyboard input).
<li>             - list item in an ordered list <ol> or an unordered list <ul>.
<ol>             - ordered list.
<p>              - paragraph.
<pre>            - pre-element displayed in a fixed width font and and 
                   unchanged line breaks.
<s>              - strikethrough.
<sup>            - superscript text appears 1/2 character above the baseline 
                   used for footnotes and other formatting.
<sub>            - subscript appears 1/2 character below the baseline.
<strong>         - defines important text.
<strike>         - strikethrough is deprecated, use <del> instead.
<ul>             - unordered list.
<br>             - line break.
<hr>             - defines a thematic change in the content, usually via a 
                   horizontal line.

You can strikeout a piece of text using the <s>...</s> HTML tag pairs.

For more information, see How do I format my posts using Markdown or HTML?

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It's possible to strikethrough a text on a post using <s>text</s>

It's not possible to strikethrough on the comment.

It's possible to strikethrough a text on a chat using ---text---.

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There is a user script that adds a strikeout button to the stackexchange editor, see https://stackapps.com/q/3341 for instructions for installing.

With this script the editor will have additional buttons on the top right:

feature in action

(animation taken from https://stackapps.com/a/7932)

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