distance <distance-statement> end

--{Nonbonded distance analysis: analyses the nonbonded distances as
   provided by the nonbonded list routines.}

<distance-statement> :==

  from=<atom-selection>
  --{Select subset of atoms for distance analysis.}
  to=<atom-selection>
  --{Select subset of atoms for distance analysis.}
  cuton=<real>
  --{Lower distance cutoff for distance analysis.}
  cutoff=<real>
  --{Upper distance cutoff for distance analysis.
     Distances less than cutoff and less than the list cutoff (cutnb)
     will be analysed.}
  disposition=print|rmsd|matrix
  --{Define destination for analysis results.
     rmsd: stores the minimum nonbonded distance for each atom in 
           from set to all atoms in to set in rmsd array.
     print: writes all selected nonbonded distances to the specified 
            output file.
     matrix: stores all selected, nonbonded distances in a matrix and 
             then writes the matrix to the specified output file.}
  output=<filename>
  --{File for distance matrix. Default: output.}