This data category is used for the two time-history solution programs Aqwa-Drift and Aqwa-Naut, to input the parameters relating to the numerical integration scheme used in the analysis.

As the programs use a timestep technique in the analysis, the cost of the analysis is directly proportional to the number of timesteps specified, and NOT the length of the time simulation. The user should therefore be aware of the criteria for the specification of the value of the timestep, which will vary with the problem being analyzed (see the Aqwa-Drift User Manual and The TIME Data Record - Time Integration Parameters).