How to show/reveal hidden or invisible characters in NetBeans?

Question

How can you show/reveal hidden characters in NetBeans? In other editors, if this feature is turned on, a space might be shown as a small centered dot, and a tab as a right

Answer 1

This feature has finally been added and is available in NetBeans 6.10. Since this has not been released yet, you can try out 6.10 MileStone 1: http://bits.netbeans.org/netbeans/6.10/m1/. I look forward to the final release!