Can you confirm that the following code snippet does't work in Aspose.Pdf for .NET 11.4.0: TextStamp textStamp = new TextStamp("[TEST]") { Background = false, //set whether stamp is background …...YIndent = 15, Rotate = Rotation.on90 //rotate stamp }; //set...particular page foreach (Page page in aPdfDocument.Pages) { page.AddStamp(textStamp);...