7.1.12 SOLVE--This is the normal control statement for solving a problem.
 A starting basis is formed, the inverse created, and then the
 solution algorithm is initiated.


7.1.13 TAPE--This statement instructs the program to read input from
 FORTRAN unit 11. It will then continue to do so until an EOF
 control card is encountered in the data set. (See EOF description
 above).


7.1.14 (blank card)--If a totally blank card appears where a control card
 is expected, the program will print an error message and skip to
 the next BEGIN card.


7.1.15 comment card--If something appears in columns 1 through 6 that is
 not an acceptable control statement, and a control statement was
 expected, the card is treated as a comment card. If this card
 precedes "MATRIX" or "RHS", anything that appears in columns 1
 through 6 will be used to identify the problem in the output.


7.2 TYPE 1 Control Cards


7.2.1 PRMODE--This statement ("Print mode") and the data card which
 follows it determine the kind of output produced at different
 stages in the program. The stages at which output may optionally
 appear are as follows: 1. after every pivot step
 2. when feasibility is declared
 3. when optimality is declared
 4. when no feasible solution exists
 5. when infinite solution exists
 6. when OUTPUT control read, or frequency
 given by OUTPUT following FREQUE
 control card
 7. when inverse is too big for core
 8. when iteration limit is exceeded
 9. after every step in parametric run
 10. when limit for L is reached