[SOLVED] How to properly write foreign exchange symbol in xaringan

I am just wondering how to write foreign exchange symbol in xaringan, for example, Japanese Yen, Euro, etc. I just find that \textyen does not work for xaringan.

You can use HTML Entities (that is, &#entity_number;) to write currency symbols.

Here you can find a list of hex code to write the currency symbols.

---
title: "Presentation Ninja"
output: xaringan::moon_reader
---

- The Yen sign looks like &#xA5;

- The Euro sign looks like &#x20AC;