+
+ <h3>Add currency notes</h3>
+ <p>
+ - you can pick up new currencies from the official ISO 4217 list<br>
+ - you can define a custom currency for discontinued or cryptocurrency</p>
+
+ <p>When you define a custom currency, please take care of the following:<br>
+ - the Name must be at least 3 chars long<br>
+ - the ISO code is optional, but you cannot change it easily later on<br>
+ - the ISO code must be 3 chars long and cannot be the same an existing ISO 4217 one
+ </p>
+
+ <h3>Online Currency Update</h3>
+ <p>Here are the list of third party API service current and used in the past.<br>
+ - current: https://frankfurter.app<br>
+ - until 5.2: https://api.fixer.io, see <a href="https://bugs.launchpad.net/homebank/+bug/1785210">#1785210</a><br>
+ - until 5.1.7: yahoo, see <a href="https://bugs.launchpad.net/homebank/+bug/1730527">#1730527</a><br>
+ </p>
+