Open Twitter settings in Settings app

Question

I know I can open the settings app in iOS 5 using

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@\"prefs://\"]];

but is

Answer 1

I found out that the root value is the key of the localized string found in the "Settings.strings" file of the Preferences.app. Here are some values that I tested to work:

General: General
iCloud: CASTLE
Mail: ACCOUNT_SETTINGS
Twitter: TWITTER
Safari: Safari
Music: MUSIC
Video: VIDEO
Photos: Photos
Notes: NOTES
Store: STORE

However I can't figure out how to do this with my own app's settings.
prefs:root=Apps&path= seems not to work.