Specifies the paper size. The constructor has 3 modes. If there are 2 parameters, the parameters are width and height with a type of number; If there is 1 parameter, the parameter is kind which is a GC.Spread.Sheets.Print.PaperKind type; If there is no parameter, the result is the same as the second mode and the kind option is GC.Spread.Sheets.Print.PaperKind.letter.

var value; // Type: any
value = GC.Spread.Sheets.Print.PaperSize(widthOrKind, height);

function PaperSize( 
   widthOrKind : undefined,
   height : number
) : any;

var printInfo = new GC.Spread.Sheets.Print.PrintInfo();
printInfo.headerLeft("Header Left");
printInfo.paperSize(new GC.Spread.Sheets.Print.PaperSize(GC.Spread.Sheets.Print.PaperKind.a4));
spread.print(0);