ShowPlay Reference Manual, Chapter 3 (ControlVariables): resp_ybox
If FEEDBACKFLAG has the 1 bit set, a color will appear inside the RESP_BOX rectangle each time the subject presses a response button. The RESP_BOX rectangle is RESP_BOXSIZE pixels square, centered at screen position RESP_XBOX,RESP_YBOX.
The displayed color depends on the status of the CORRECTCODE paramter and which button was pressed.
Default: RESP_YBOX = Sy0 (the vertical center of the screen).
See Also:
RESP_XBOX,RESP_BOXSIZE,
CORRECTCODE
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