| A | B | 
|---|
| 8.3 alias | Windows will assign a short filename, called an "alias," to each file with a long name so these files can be used with programs that don't support long filenames. | 
| application file icons | Icons that start an application, such as a word processor or spreadsheet program. | 
| copy | To duplicate a selection, file, folder, and so forth so that you can place it in another position or location. | 
| destination | When copying or moving a file, the location where the copied or moved file will reside. | 
| disk cleanup | A program that enables you to clear your disk of unnecessary files. | 
| disk defragmenter | Rearranges disk files, storing each file in contiguous blocks. | 
| document file icons | Icons that share the same distinctive feature, a piece of paper with a superimposed graphic, that help create a link between a document and an application. | 
| extention | The part of a filename that comes after the period, called a "dot." | 
| filename | A name assigned to a file for identificaiton. | 
| fragmented files | Files that are not stored in contiguous clusters, but rather are divided into subparts that are stored in different disk location. | 
| move | To cut or remove a selection, file, folder, and so forth from one position or location and place (paste) it in another position or location. | 
| parent folder | A folder containing one or more subfolders. | 
| source | When copying a file, the file that is being copied. | 
| subfolder | A folder within another folder. |