When you use the tab key to move the keyboard focus among the components in a
properties sheet, the focus moves down through the properties in order, then
through the buttons at the top, and then to the tab itself. This is very
non-intuitive -- the focus seems to jump down to the bottom (the tabbed pane)
and then back to the top (the first property).

A more intuitive tab order would be:

1. Each property in order
2. The tabbed pane ("Properties" or "Execution" or whatever)
3. The buttons at the top (sort order buttons, etc.)
4. Back to the first property