What+is+a+toggle+key?

In the computer world, the word ‘toggle’ comes up a lot. Basically to toggle means to switch from one setting to another. You can toggle between screens on your computer. There are toggle tools that let you enable and disable Adobe Flash while you are browsing the internet. A toggle key allows you to toggle or switch between key functions. In Windows, there are three toggle keys.
 * What is a toggle key? **

When the Num Lock is off, then you can use the other functions on the keys instead, i.e. the arrows, Home, End, etc (see chart below). Modern software does not usually support Scroll Lock, but there are exceptions, such as Microsoft Excel. In Excel when the Scroll Lock is off, you go from cell to cell with your arrow keys. With Scroll Lock on, you can scroll the whole page with the arrow keys on the number pad; the cells stay in the same place and do not scroll with you. You can even turn Scroll Lock on and off from within Excel. Thus, if you happen to find software that works with Scroll lock, you can turn it on and pause what is on the screen while you scroll, or when it is off, just scroll normally
 * Caps Lock:** You can toggle between capitals and lower-case letters.
 * Num Lock:** You can toggle between numbers and no numbers.
 * Scroll Lock:** This key is not used for much toggling of anything anymore