Write a COORDS set to a file
crdout <crd set> <filename> [<trajout args>] [crdframes <start>,<stop>,<offset>]
Write COORDS data set <crd set> to trajectory named <filename>. A subset of frames in the COORDS data set can be specified with ‘crdframes’.
For example, to write frames 1 to 10 from a previously created COORDS data set named “crd1” to separate PDB files:
crdout crd1 crd1.pdb multi crdframes 1,10