You can strikethrough with the HTML tag <s> and the close tag </s>.

Like so

<s>Like so</s>

Don't use it too often, though; it doesn't look very good.

You can strikethrough with the HTML tag <s> and the close tag </s>.

Like so

<s>Like so</s>

In chat this effect can be achieved with ---

---Like so---

Don't use it too often, though; it doesn't look very good.