FILE TYPES.
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Files are described by a name of up to 8 characters plus an extension
name of up to 3 characters. Whereas the file name is selected by the
user, the extension name is frequently defined by the system in use.
Some typical extension names relevant to MS-DOS and Turbo Pascal are:

.BAK  Backup source file - a resaved file automatically saves the           	original as a .BAK file.

.BAT  Batch file containing a sequence of MS-DOS command lines.

.BGI  Borland Graphics Interface file, for screen display.

.COM  Compiled file, which is an executable file from MS-DOS.

.EXE  Executable file from MS-DOS.

.HLP  Help file.

.PAS  Pascal source code file.

.SYS  System file used by MS-DOS.

.TPL  Turbo Pascal Library File.

.TPU  Turbo Pascal Unit file.

.TXT  Text file in ASCII format.


Source code, written in a high level language, such as Pascal, is converted
into Object code (machine language) by a Compiler. Whereas Turbo Pascal,
version 3, created .COM files at compilation, version 6.0 now creates .EXE
files.


FILETYPE.TXT
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