In a rare move, the White House took down a racist post last week from one of President Trump's social media accounts. But extremism researchers say it fits a pattern of mainstreaming extremist ideas.

This example shows how to create a markup annotation that highlights a selected text on a page. To create this annotation for a selected text, call one of the PdfViewerControl.HighlightSelectedText ...

This example illustrates how you can add a watermark to a separate document section. The Rich Text Editor ships with the WatermarkManager that allows you to add text or image watermarks. This class is ...

Abstract: Presents corrections to typographical errors in the paper, "Inference of regular expressions for text extraction from examples," (Bartoli, A., et al), IEEE ...