**ShowPlay Reference Manual, Chapter 3 (ControlVariables): sy0**
===== SY0 -- Image display vertical center =====
SY0 is an integer number -- its default value is 1/2 the screen width.\\
Showplay will use SY0 as the horizontal center pixel position for all visual stimuli that are to be centered in the display.

**See Also:**\\
[[jvs:cigal:showplay:manual:chapter1:scaledisplay|Display Scaling]], 
[[jvs:cigal:showplay:manual:chapter3:widscale|Widscale]], 
[[jvs:cigal:showplay:manual:chapter3:hgtscale|Hgtscale]],
[[jvs:cigal:showplay:manual:chapter3:rgbscale|RGBscale]],
[[jvs:cigal:showplay:manual:chapter3:sx0|Sx0]]

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[[jvs:cigal:manual|CIGAL Manual]], 
[[jvs:cigal:showplay|ShowPlay Home]], 
[[jvs:cigal:showplay:manual|ShowPlay Manual]], 
[[jvs:cigal:showplay:manual:chapter3|InputParameters List]], 
[[jvs:cigal:showplay:manual:help|Manual Help]]