Stands for "What You See Is What You Get". Originally used to describe software applications that let you see how your work will look like after it gets printed. Some software produced in 1980's and early 1990's lacked the capability of displaying different typefaces or graphics on screen because of technical limitations, while they can produce them in printer output. First popular WYSIWYG applications were written for the Apple Macintosh that made its debut in 1984. PCs started to catch up a few years later with the introduction of Windows 2.0.
A new use has recently arisen to separate text-based HTML editors from their graphical WYSIWYG counterparts. Text-based HTML editors such as BBEdit and HotDog Professional exclusively require hand coding while in WYSIWYG HTML editors such as Macromedia Dreamweaver and Microsoft FrontPage, you can edit elements of a web page graphically with a mouse.