The scope of results given by statistical operations can be selected by the RESULTS=<output_level> specification where <output_ level> is an integer from 0 to 100. Level 0 implies minimal output and 100 maximal. The default value of the output level is set in the system file SURVO.APU as results=70. The effect of the RESULTS specification is determined in each operation separately (see description of the operation in question). In some operations also other forms of RESULTS may be available. C = More information on output control