The Silicon Jungle by David H. Rothman

3. A =control key= is what you start holding down to turn a letter or

series of letters into commands for your computer. Used with the control key, the letters normally won’t show up in the document you’re typing. Some programs, by the way, may use the control key and an =escape= key, which could be a way to get from one part of the program to another. Or the escape key may take on functions similar to the control key. In addition, there’s an =alternate= key that you may also use to help boss your machine around.