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=item open

Opens the specified HANDLE using open with DIRECTION and ARGS as its arguments.

Example:
  0 => ['open', '<', '/dev/null']

=item decorate

Decorate every line written to the HANDLE by the child. The DIRECTION must be 
C<E<gt>>. ARGS are in the form C<DECORATOR, OUTPUT>. OUTPUT is a glob reference
and specifies a file handle, into which decorated lines are written. Decorator is
a string or a code reference. If the decorator is a string, it is prepended to 
every line written by the started process. If the DECORATOR is a code reference, 
it is called for each line written to the HANDLE with that line as its argument 
and its return value is written to the OUTPUT.

Example:
  \*STDERR => ['decorate', '>', 'Child STDERR: ', \*STDERR]

=back

=back

=item code (optional, but must be specified either in new or run)