movable tabs

[wordmuse]

When I have multiple items open, represented as tabs, I'd like to be able to reposition them by drag-and-drop. This would let me open an item and make it "important" by dragging it to the left. Without this capability, I have to close tabs that are left of the new item until the new item is where I want it, and then I can reopen the other tabs. Cumbersome. Por favor?

Thanks.
- Bal