What Do All 10g Flashback Features Rely on and what are their Limitations?

There's a great MetaLink article on Flashback - check it out!

What Do All 10g Flashback Features Rely on and what are their Limitations?
Doc ID: Note:435998.1

• What Do All Flashback Features Rely on ?
• Differences Between New Oracle 10g Flashback Technologies
• Limitations of Flashback Database
• Limitations and Restrictions on Flashback Drop
• Limitations and Restrictions on Flashback Tables

Here are two gems that were news to me:

• To be able to flashback a table, you must enable row movement for the table
• Because DML operations are used to bring the table back to its former state, the ROWIDs in the table change. As a result, Flashback Table is not a viable option for applications that depend on the table’s ROWIDs to remain constant

Note that altering a table to enable row movement will cause underlying PL/SQL to become invalid!!!