Car windows are made to be reliable and withstand damage during an accident. However, if you ever get stuck inside the car and your doors are jammed, you can use a spark plug to break the windows in ...

Watermarking your images allows you to tell people your pictures belong to you. You can add both text-based and image-based ...

If you work with PDFs in, you will at some point want to know how to add or remove a watermark in Acrobat. A watermark is an image or text added in front or behind the contents of a document.