code: private String _write_single_line(String tag, String text) {
  		assert tag.length() < HEADER_WIDTH;
  		return StringManipulationHelper.padRight(tag, HEADER_WIDTH)
  				+ text.replace('\n', ' ') + lineSep;
  	}
docs: Used in the the 'header' of each GenBank record.
  
  @param tag
  @param text