| A | B |
| document window | area on screen where you type text |
| DOS | disk operating system |
| editing | proofreading text and making corrections |
| error | any misstroke of a key |
| file | information stored on a disk |
| function keys | special commands |
| GWAM | measure of keying speed |
| ICON | a picture that represents a command, program or file |
| Input | process of entering text and data |
| line spacing | number of blank lines between text |
| Single spacing | zero blank lines between text |
| double spacing | one blank line between text |
| quadruple spacing | 3 blank lines between text |