Cellparm

See http://xds.mpimf-heidelberg.mpg.de/html_doc/cellparm_program.html

The program has an undocumented limit of 20000 lines with UNIT_CELL_CONSTANTS= .

Please note that CELLPARM's terminal output does NOT give you the result. Therefore, you should not use

cellparm > cellparm.out

or the like. You have to

cat CELLPARM.LP 

to see the result.