code: public static String resolveStringDescription( String variableName, String defaultValue ) {
  
  		String result = null;
  		if( Constants.SPECIFIC_VARIABLE_IP.equalsIgnoreCase( variableName )
  				|| variableName.toLowerCase().endsWith( "." + Constants.SPECIFIC_VARIABLE_IP ))
  			result = SET_BY_ROBOCONF;
  		else if( ! Utils.isEmptyOrWhitespaces( defaultValue ))
  			result = DEFAULT_VALUE + defaultValue;
  
  		return result;
  	}
docs: Resolves the description to show for an exported variable.
  @param variableName a non-null variable name
  @param defaultValue the default value (can be null)
  @return a description (can be null)