mindist {<mindist-statement>} end

--{Check minimum distance of selected atoms. The distances between
   atom centers are checked from atoms in set1 to atoms in set2,
   and from set2 to set2, but not from set1 to set1. If all distances
   are greater than mindistance, $RESULT is true, false otherwise.}

<mindist-statement> :==

  set1=<atom-selection>
  --{Select first subset of atoms. No default.}
  set2=<atom-selection>
  --{Select second subset of atoms. No default.}
  mindistance=<real>
  --{Required minimum distance in Angstroems. Default=1.}
  specialpositions=<logical>
  --{If true, allow for special positions. Default=false.}