→To create digital slides, glass slides are scanned in a slide scanner. There are several formats for the resulting data, but ultimately digital slides can be viewed using any computer (Fig. 1.2). Mouse controls are fairly intuitive. For example, dragging and dropping is used to move around the slide. The mouse may have a scroll wheel that can be used (sometimes with the Ctrl key) to change magnifica- tion, or magnification can be selected from a menu (Fig. 1.2, circle). The inset in the upper right shows a scanning view of the slide. The box in the inset shows the user where the view is on the slide, and it changes size depending on magnification. As mentioned, each digital slide platform is different, and functionality varies based on operating system, type of mouse, and other features of the computer system. The best way to learn is by experimentation.