FILES_IN
  PARM p1 1spshm.top;
  STREAM s1 1.xyz 2.xyz 3.xyz 4.xyz 5.xyz;
  STATIC ref_set minhm.xyz;
FILES_OUT
  TABLE t1 table.rms;
DECLARE
  GROUP grpid ((ATOM TYPE CA) & (RES 106-110));
  RMS fit1 grpid s1 ref_set;
OUTPUT
  TABLE t1 fit1;
END