rong>Calculate Buttons</strong> let you perform mathematical operations and display the results directly in your note. You can do simple math, reference numbers from other lines in your note, or even use natural language math expressions.</p><h2>Simple Math</h2><p>Do basic calculations with a Calculate Button:</p><pre>
```button
name Add Em Up
type calculate
action 2+2
```
^button-add
</pre><p>When clicked, this button will replace itself with the result: <code>4</code></p><h2>Referencing Line Numbers</h2><