Previewing your animation in Real Time is very important so you can see if your timing is correct.
It is possible to preview your timeline with Spacebar, but it isn't as accurate as hitting ZERO on the Numeric Keypad.
This Tutorial shows how to use the hotkeys 'B' and 'N' together with '0' on the keypad to preview your animation in Real Time.
B = sets the beginning of your work area at current frame.
N = sets the end of your work area at current frame.
0 (on the keypad) = RAM preview
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