These are attributes defined for X/HTML elements, which are "event attributes":
- onblur
- onfocus
- onchange
- onclick
- ondblclick
- onkeydown
- onkeyup
- onkeypress
- onload
- onunload
- onmousedown
- onmousemove
- onmouseout
- onmouseover
- onmouseup
- onreset
- onselect
- onsubmit