The strikethrough text can be produced using the <del> tag.
<p>This text is <del>cut</del>by a line !</p>
This text is
cutby a line !
This tag does not have to many applications, but we will try to exemplify its use by the following example: a shopping list
<ol> <li>An iPhone</li> <li><del>Cheese</del></li> <li><del>Milk</del></li> </ol>
We hope these info has been useful to you!