-- changed the first <type> parameter of browse_for_file service to <type_and_options>, and added numerous flag keywords. <type_and_options> is now required, not optional.
-- forgot to document trailing parameter to browse_for_file service call <defaultFileName>. -- added trailing parameter to browse_for_file service call <varNameROstate>. -- added code to return multiple file selections from browse_for_file service -- demo file browse_for_file.powerpro.
