Twelve common tasks in XPages development are summarized, including:
1. Themes allow standardizing user interfaces across applications.
2. Repeat controls simplify displaying repeating data compared to HTML or LotusScript.
3. In view editing enables updating documents directly on XPages without additional code.
4. Design properties and the properties panel provide flexibility in component configuration.
5. AJAX partial page refresh updates parts of pages without reloading the entire page.
6. Pager controls provide pagination functionality out of the box.
7. TODO comments can be managed in Eclipse for task tracking in XPages projects.
8. Local history and source control allow recovering code revisions.
9. Custom controls promote