
Glossary
| execute | 1. | Informally, to run a program. | 
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 | 2. To replace the text segment and data | |
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 | segments of a process with a given program | 
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 | [1]. | 
| FEP | The Front End Processor is the  | |
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 | processing unit. | |
| FEPOS | The Front End Processor Operating System is the | |
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 | downloaded program running in the  | |
| FIFO | A named permanent pipe  | |
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 | which allows two unrelated processes to | |
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 | exchange information using a pipe connection. | |
| file | 1. In general, a potential source of input or | |
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 | destination for output. | 
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 | 2. Most specifically, an  | |
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 | contents, i.e., a plain file, a special file, or a | 
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 | directory. | 
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 | 3. A directory entry; several directory entries | |
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 | may name the same file [2]. | 
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 | 4. Most loosely, a plain file. | |
| file descriptor | A conventional integer quantity that designates | |
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 | an open file. | |
| filename | 1. | A path name. | 
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 | 2. The last component name in a path name. | |
