The software that is used to create text-based documents are referred to as 

Which of the following refers to too much electricity and may cause a voltage surge?

................ is a Windows utility programme that locates and eliminates unnecessary fragments and rearranges files and unused disk space to optimise operations. 

Which of the following refers to the rectangular area for displaying information and running programmes?

A (n) ................ appearing on a web page opens another document when clicked.

................ is the most important/powerful computer in a typical network.