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So what the heck is a tick? Correct answer:
- A tick is the unit used by DMDX to time screen displays
and
- The time it takes the cathode ray on the monitor to scan the tube
- NB: This can change at different times for different machines
- You can find out how long a tickis using a program TimeDX
or
- By looking in the top line of an .azk data file
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					 MRC Cognition and Brain Sciences Unit
MRC Cognition and Brain Sciences Unit

