dca603d2_MacInfo___Efficiency__What_to_do
[Task] Switching between active applications [Example] Copying from one window to that of another application [What to do] 
If a window of the other application is visible, simply click in it. If none is visible, click the application's icon in the dock to bring it to the front. If the dock is hidden or far away, use -tab to rotate in the active applications.
MacInfo - Efficiency
What to do