First defined in: FKiSS1
The viewport action sets the play field position of the
top-left corner of the viewport to <X, Y>.
The viewport defines the size of the area of the play field which is
displayed. The size of the viewport can be changed with the
windowsize action.
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Not all KiSS viewers support this action.
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X
In FKiSS1 to FKiSS2.1, X must be a number.
In FKiSS3, X may be a number or a variable.
Y
In FKiSS1 to FKiSS2.1, Y must be a number.
In FKiSS3, Y may be a number or a variable.
Example:
;@ viewport(31, 25) ; Set the viewport position to 31 (x), 25 (y).
;@ viewport(X, Y) ; Set the viewport position to X, Y.