1. Start w/ fresh user dir; don't import settings. See in log:

Turning on modules:
	testsysopts []

2. Select Testing... -> Probe Sample Settings. Dialog appears, showing
   "defaultValue" and "false". Leave it open for rest of session.

3. Change "Prop #1" to "foo" and hit Enter to apply changes. Log
   shows: "wE called"

4. Select Project -> Project Manager. Create a new project "p2" and
   open it.

5. Change "Prop #1" to "bar" and hit Enter to apply changes. Log does
   not show "wE" called!

6. Open Project Default. prop1 still shows "bar".

7. Change prop1 to "foo". No wE.

8. Open p2. prop1 still "foo".

9. Select Tools -> Options -> Testing... -> Sample Settings. Prop #1
   shows "foo". Close the Options window.

10. Change prop1 -> "bar". Now log shows "wE called".

11. Open Project Default. prop1 still "bar".

12. prop1 -> "foo". No "wE called".

13. Open p2. Still "foo".

14. prop1 -> "baz". No wE.

15. Open Project Default. Still "baz".

16. Open Tools -> Options; now "foo" in both dialog and Options
    window, and log shows "rE called".

17. Open p2. prop1 becomes "bar". rE.

18. Open Default. prop1 becomes "foo". rE.