The main tool bar

Buttons on the main tool bar

1. Tweet current scores or box score on Twitter. You need to have Twitter active on the same device. If the box score is displayed on the screen, it gets tweeted. Otherwise the current scores are sent.
2. Show court view
3. Show box score.
4. Go to Settings page.
5. Lock current set and create another set
6. Undo last event or last rally
7. Go to Line up input

You can undo:

1. The last event
2. The current rally (up to and include the last serve)