A set of basic utility programs have been developed together with the library. These programs can be used to perform useful operations on SEPlib90 data sets. The following is a partial list of these utilities, that are in different stages of development.

`Synch90`- Reorder the data traces according to the value of the`data_record_number`in the trace headers.-
`Sort90`- Sort the headers and the traces in a data set, and create the gridding information. -
`Window90`- Window a data set according to the header values and/or the grid information. -
`Transp90`- Transpose the axes of the Data Coordinate System and/or of the Grid Coordinate System. -
`Infill90`- Regularize a data set by placing zero traces in the empty grid cells. -
`Headermath`- Perform arithmetic operations on header values. -
`In90`- Print information on a data set. -
`Cp90`- Copy a data set. -
`Rm90`- Remove a data set. -
`Create90`- Create a SEPlib90 data set from SEPlib77 files that contains the data traces and the geometry information -
`Su2sep90`- Convert a SU data set into a SEPlib90 data set. -
`Sep902su`- Convert a SEPlib90 data set into a SU data set. -
`Promax90`- Converts a Promax data set into a SEPlib90 data set.

11/12/1997