Apple Workgroup Server 8550 - Manual (Page 56)

Working with several programs at a time
You can open as many application programs and desk accessories as your
server’s memory allows.
Finding out which programs are open
All open programs are listed in the Application menu at the right end of the
menu bar. The name of the active program (the one you’re using right now)
has a checkmark next to it, and its icon appears in the menu bar.
Switching programs
You can switch to another open program or desk accessory by choosing its
name from the Application menu.
If a program’s icon is dimmed in the menu, that means its windows are
hidden. Choosing the program from the Application menu displays its
windows.
You can also switch to another program by clicking in a window that
belongs to an open program or by double-clicking a program icon (or the
icon of a document that was created with the program).
Hiding and showing windows on the desktop
You can hide all windows except those of the active program by choosing
Hide Others from the Application menu.
The other programs remain open even though their windows are hidden.
When you switch to another program, its windows become visible again.
If you want to see all the open windows, choose Show All from the
Application menu.
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A checkmark indicates
the active program.
Commands to hide or display open windows
Open programs
The Finder icon