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Truncate procedure
DECLARATION: Truncate(Var FileVar);
PURPOSE: Truncates the file size at the current file position
UNIT: System
REMARKS: FileVar is a File-Type variable of any type. All
records past the current file position of FileVar are
lost as the current file position becomes the end-of-file
(EOF(FileVar) is TRUE).
NOTE: Errors are returned through IOResult.
See Also:
Append
EOF
FileSize
Reset
ReWrite
Seek
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