Adding more comments to the header file

namespace Isis {

  /**

   * @brief 

   * @brief Table to store tracking information for a mosaic.

   *

   * This table will currently be stored in the label of a separate cube. This tracking cube will

   * also contain a single tracking band. The DN values stored in this band will correlate to the

   * indices in this table. Each record within this table will contain the filename of an

   * associated cube, that cube's serial number, and the DN value associated with this cube within

   * the tracking band (which should also be its index in tha table).

   *

   * @author 2018-07-19 Jesse Mapel & Summer Stapleton

   *

   * @internal