rewind - sets the current read/write position to the beginning of the file
file.rewind()
The rewind() intrinsic method sets the current
read/write position in a file to the beginning-of-file. A successful
rewind() will clear the end-of-file indicator and
remove any effect of ungetc().
Non-disk-based files (pipes, terminals) may not be rewound.
None
ArgCheck if arguments are specified
TypeCheck if file is not a
File
AccessCheck if
file has been closed
IoCheck for
general I/O subsystem errors
file.rewind(); // Reset to the beginning-of-file