Create Annotated PDF

I have a requirement to take an existing PDF file and to add annotations (post it notes) to this existing PDF automatically. The annotation information will come from a corresponding XML file which will detail the following information; 1/ X,Y coordinate for the position of the annotation 2/ Username who the annotation should be assigned to 3/ Annotation Text - the text information that the annotation should contain The process should be Unicode compliant to ensure that the data contained in the XML file is correctly applied to the PDF - therefore any foreign characters/special characters should be correctly rendered. The output of the program should be a new PDF containing standard Acrobat annotations that can be read using a standard PDF reader viewer. ## Deliverables At this stage I am seeking programmers who have knowledge and experience of PDF creation/expertise. A more detailed functional specification will be provided once I have a guide on time & costs of undertaking this project