NBXMAKE
     =======

        This program makes a b+tree file from the SEEDIS style NDX

     file for use in the SEEDIS programs.  The resultant output

     file, which has the extension *.NBX, replaces the NDX file

     and has the advantage of speedier look-up in those programs using

     seedis data files.  The NBX file is keyed by the keys (USE=K)

     in the NDX file and has as data the non-key de's.



     The program resides in sy$seedis:[seedis.btree].  

     Upon exection, the program will ask for the input file.  The full

     name must be given, i.e., the device, directory and name.  If the

     DAT file is moved to some other location, the NDX file must be

     modified and the ndxmake program must be run to re-make the NBX

     file.


     After making the b+tree file, it may be looked at by executing 

         sy$seedis:[seedis.btree]bt_look.exe.