More advanced elements

[TangentFoxy]

• [ ] textbox (text input area)
• [ ] scrollbox (internal box area with scrollbars if external area is too small)
• [ ] dropdown (openable selectable dropdown list)
• [ ] slider (essentially a scrollbar you can tie to whatever you want)
• [ ] radio (internally has group, that way you can position however you want)
• [ ] checkbox
• [ ] collapsiblebox (box changes size when header clicked)