# HTML stuff
## DOM manipulation
    // create new element
    document.createElement('button')
    
    // append child
    element1.appendChild(element2)
    
## Elements
### Button
By default, a button has type `reset` or `submit`, both of which reload the
page. To avoid reloading:
    
### Checkbox
To check by default:
    
### Built-in collapsable
    Description
        The rest of this text will be hidden until this is expanded.