There are several different formats for graphics. Over 20 years ago, the BMP file was invented by Microsoft. Not long after came the JPG file (invented by an industry group not wanting to be tied to Microsoft). This is all techy stuff we can mostly ignore, but one graphics style has a special use, the GIF file. Unlike all the others, not only can it show a picture; it can also show a moving image. And it does it very efficiently. This means that you theoretically can use a GIF to show a short screen capture or other video. Besides the small file size (important for fast websites), a GIF file is... [...]