t_filenm fnm[] = { /* files for g_order */
{ efTRX, "-f", NULL, ffREAD }, /* trajectory file */
{ efNDX, "-n", NULL, ffREAD }, /* index file */
- { efNDX, "-nr", NULL, ffREAD }, /* index for radial axis calculation */
+ { efNDX, "-nr", NULL, ffOPTRD }, /* index for radial axis calculation */
{ efTPR, NULL, NULL, ffREAD }, /* topology file */
{ efXVG, "-o", "order", ffWRITE }, /* xvgr output file */
{ efXVG, "-od", "deuter", ffWRITE }, /* xvgr output file */
- { efPDB, "-ob", NULL, ffWRITE }, /* write Scd as B factors to PDB if permolecule */
+ { efPDB, "-ob", NULL, ffOPTWR }, /* write Scd as B factors to PDB if permolecule */
{ efXVG, "-os", "sliced", ffWRITE }, /* xvgr output file */
{ efXVG, "-Sg", "sg-ang", ffOPTWR }, /* xvgr output file */
{ efXVG, "-Sk", "sk-dist", ffOPTWR }, /* xvgr output file */