Updated gllnims2isis docs. (#4713)

  <brief>

    Import a Galileo Near Infrared Mapping Spectrometer (NIMS) cube into ISIS cube format.

    Note: This application only works with the original PDS3 archive.

    This routine was created to restore the NIMS tube/gcube data and migrate to PDS4.

  </brief>

  <description>

    <p>

      <b>This application only works with the original

      <a href="https://pds-imaging.jpl.nasa.gov/data/galileo/galileo_orbiter/">PDS3 archive</a>.

      This routine was created to restore the NIMS tube/gcube data and migrate to PDS4 which has been released

      <a href="https://pdsimage2.wr.usgs.gov/Individual_Investigations/multi_galileo_nims_tube.gcube_cahill_2019/">here</a>.

      </b>

    </p>

    <p>

    This program will read and convert a PDS formatted Galileo Near Infrared Mapping Spectrometer

    file (downloaded as a *.qub file from a

        </p>

        </li>

    </ul>

    <p>

      <b>Note:</b>

      <p>

      Now that the data has been migrated to PDS4, this routine should not be needed

      for ingesting Galileo NIMS tube/gcube data. The PDS4 migrated files are stored

      in a "raw" ISIS3+ cube format with a PDS4 label. Thus applications which have

      support for ISIS3+ cube format or the PDS4 format should be able to directly

      use them. For more about how the data was migrated, please see the

      <a href="https://pdsimage2.wr.usgs.gov/Individual_Investigations/multi_galileo_nims_tube.gcube_cahill_2019/document/">readme.pdf</a>

      from the new archive or the Cahill et al., 2017 LPSC abstract.

      </p>

      <p>

      Cahill, J. T. S., K. Becker, R. Espiritu, C. Isbell, and F. P. Seelos (2017), Galileo NIMS:

      New ISIS3 tools for modernized data set handling and PDS4 re-archival, Planetary Data

      Workshop, 3, <a href="https://www.hou.usra.edu/meetings/planetdata2017/pdf/7071.pdf">abs. 7071</a>.

      </p>

    </p>

    </p>

  </description>

      Instead a MappingInformation PVL group was added, along with documentation about

      how to use nocam2map with this information to create a valid projected ISIS Cube.

    </change>

  </history>

  <category>