| Name | N | Name | Text |
| Version | V | Code Version. Only One Version Currently Avaliable | Integer |
| Site Class | C | SiteClass (0=A 1=B 2=C 3=D 4=E) | Integer |
| Period Flag | P | Type(0=Approximate 1=Program_Calculated 2=User_Defined) | Integer |
| Eccentricity | E | The eccentricity ratio that applies to all diaphragms. | Number |
| UserT | T | The user specified time period. This item applies when the PeriodFlag is UserDefined | Number |
| Hazard Factor | Z | The hazard factor, Z. | Number |
| Return Period | R | The return period factor, R. | Number |
| Distance | D | Distance to the fault in km, used to calculate the near fault factor. | Number |
| Sp | Sp | The structural performance factor, Sp. | Number |
| Ductility Factor | U | The structural ductility factor, u. | Number |
| UserZ | T | This item is True if the top and bottom elevations of the seismic load are to be user specified. It is False if the elevations are determined by the program. | Boolean |
| TopZ | T | It is the global Z-coordinate at the highest level where auto seismic loads are applied. | Number |
| BottomZ | B | It is the global Z-coordinate at the lowest level where auto seismic loads are applied. | Number |
| XDir | X | Global X or Global Y if false | Boolean |