Creates a duplicate of the specified slide object, adds the new slide to the slides collection.
| Name | Type | Default | Description |
| nPos | number | ApiPresentation.GetSlidesCount() | Position where the new slide will be added. |
builder.CreateFile("pptx");
var oPresentation = Api.GetPresentation();
var oSlide = oPresentation.GetSlideByIndex(0);
var oGs1 = Api.CreateGradientStop(Api.CreateRGBColor(255, 213, 191), 0);
var oGs2 = Api.CreateGradientStop(Api.CreateRGBColor(255, 111, 61), 100000);
var oFill = Api.CreateRadialGradientFill([oGs1, oGs2]);
oSlide.SetBackground(oFill);
var oDuplicateSlide = oSlide.Duplicate(1);
builder.SaveFile("pptx", "Duplicate.pptx");
builder.CloseFile();