Our use case doesn't seem that too "out of the ordinary", but we have standardized forms that are dynamically rendered using Telerik inputs and a PDF Viewer component and when the user focuses on one of the inputs, the PDF needs to pan/zoom in the general region/area where the value of that input field is located on the PDF.  It's basically to give the user the ability to verify a value that has been OCR'd from the PDF and displayed in the input field.  We have another feature request to add the ability to quickly add a square annotation to the PDF via the API as well because we have to highlight the actual area on the PDF as we pan/zoom.