- camera focus
- mouse/text cursor focus
- when something is selected (has focus)
- a Tools Menu selection tool and Edit Window option
Notes[]
- When the SL client has focus, it tends to use 100% of the user's CPU (or 50% if on a dual-core). Before flexible prims were implemented in version 1.9.1, when SL was minimized, its CPU usage went (or close) to 0 but now it usually stays between 10-15%.