Remapping a key means changing its function to perform a different action than the one it's assigned to by default. To remap a key, you can use some third-party software that's designed for this purpose. One such popular tool is SharpKeys, which you can download and install on your computer. With SharpKeys, you can reassign keys to perform any other function like a shortcut key, control key or multimedia key. It's worth noting that some software that comes with hardware may allow key remapping functionality natively, so it's important to check such options first. Overall, remapping keys is an excellent way to streamline your work and make your interaction with your computer more efficient.