Original sentence: A collection of resources for using Winmodems under LinuxA Winmodem is a modem designed to work with the Microsoft Windows operating system.A review of the differences between software-based modems and hardware-based modems.Because they do so little by themselves, a computer program could use a Winmodem as something other than a modem;  for example, it could emulate an answering machine.This makes them smaller and cheaper, but also means that they cannot be easily used on other operating systems
Edited sentence: A Winmodem is a modem designed to work with the Microsoft Windows operating system.This makes them cheaper, but also means that they cannot be easily used on other operating systems