code: public boolean
  removeRecord(Record r, int section) {
  	if (sections[section] != null && sections[section].remove(r)) {
  		header.decCount(section);
  		return true;
  	}
  	else
  		return false;
  }
docs: Removes a record from a section of the Message, and adjusts the header.
  @see Record
  @see Section