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C17 PERIODIC FORCING (TIDAL) SURF ELEV OR PRESSURE BOUNDARY COND. FORCINGS
*
* NPFOR: FORCING NUMBER
* SYMBOL: FORCING SYMBOL (FOR REFERENCE HERE ONLY)
* AMPLITUDE: AMPLITUDE IN M (PRESSURE DIVIDED BY RHO*G), NPFORT=0
* COSINE AMPLITUDE IN M, NPFORT.GE.1
* PHASE: FORCING PHASE RELATIVE TO TBEGIN IN SECONDS, NPFORT=0
* SINE AMPLITUDE IN M, NPFORT.GE.1
* NOTE: FOR NPFORT=0 SINGLE AMPLITUDE AND PHASE ARE READ, FOR NPFORT=1
* CONST AND LINEAR COS AND SIN AMPS ARE READ FOR EACH FORCING, FOR
* NPFORT=2, CONST, LINEAR, QUAD COS AND SIN AMPS ARE READ FOR EACH
* FOR EACH FORCING
*
C17 NPFOR SYMBOL AMPLITUDE PHASE