It's used to activate a search or put the computer to 'sleep'.
Pressing F3 on its own drops down a small window where you can type a word (or words) to search for. Once you enter the search string - successive presses of the F3 key will jump to the next occurrence.
Pressing the Fn key + F3 together puts the computer into sleep mode.
in Windows 98 it's for the find files command
To retrieve the last command entered, press F3
The ALT-F3 key used for opening the Deskbar.
command (apple key) W closes the current window command (apple key) Q quits the current application
Command Right arrow for mac
If you are in an Internet Browser that supports Tabbed Browsing, hitting the Ctrl + 2 command will navigate you to the second tab in your window.
crtl + f3
CLC is the command used for this purpose. CLC clears the command window and homes the cursor
command window is a window in matlab environment, role of command window is that it shows output of some particular programme other than graph.
Enter F1 at the command prompt.
alt+f3
F3 button