Copies the Oracle CDD/Repository data dictionary definition of
       one or more dictionary objects or types of object definitions to
       a command file.

       Format

                  {          {DOMAINS     }                          }
                  {          {PLOTS       }                          }
                  {  [ALL]   {PROCEDURES  }  [,...]  [ON]  file-spec }
                  {          {            }                          }
                  {          {RECORDS     }                          }
                  {          {TABLES      }                          }
         EXTRACT  {                                                  }
                  {  ALL  [ON]  file-spec                            }
                  {                                                  }
                  {                                                  }
                  {  [ON]  file-spec  path-name  [,...]              }
                  {                                                  }
                  {                                                  }
                  {  path-name  [,...]  [ON]  file-spec              }