using IronPdf;

// create a new PDF or load and edit an existing document.
var Pdf = PdfDocument.FromFile("existing.pdf");

// Create a PDF annotation object
var Annotation = new IronPdf.Annotations.TextAnnotation()
{
	Title = "This is the major title",
	Subject = "This is a subtitle",
	Contents = "This is the long 'sticky note' comment content...",
	Icon = IronPdf.Annotations.TextAnnotation.AnnotationIcon.Help,
	Opacity = 0.9,
	Printable = false,
	Hidden = false,
	OpenByDefault = true,
	ReadOnly = false,
	Rotateable = true
};

// Add the annotation "sticky note" to a specific page and location within any new or existing PDF.
Pdf.AddTextAnnotation(Annotation, 1, 150, 250);

Pdf.SaveAs("existing.pdf");

Imports IronPdf

' create a new PDF or load and edit an existing document.
Private Pdf = PdfDocument.FromFile("existing.pdf")

' Create a PDF annotation object
Private Annotation = New IronPdf.Annotations.TextAnnotation() With {
	.Title = "This is the major title",
	.Subject = "This is a subtitle",
	.Contents = "This is the long 'sticky note' comment content...",
	.Icon = IronPdf.Annotations.TextAnnotation.AnnotationIcon.Help,
	.Opacity = 0.9,
	.Printable = False,
	.Hidden = False,
	.OpenByDefault = True,
	.ReadOnly = False,
	.Rotateable = True
}

' Add the annotation "sticky note" to a specific page and location within any new or existing PDF.
Pdf.AddTextAnnotation(Annotation, 1, 150, 250)

Pdf.SaveAs("existing.pdf")