conformation {<conformation-statement>} end

<conformation-statement> :==

  assign <atom-selection> <atom-selection> <atom-selection> <atom-selection> 
        [<atom-selection> <atom-selection> <atom-selection> <atom-selection> 
        [<atom-selection> <atom-selection> <atom-selection> <atom-selection> 
        [<atom-selection> <atom-selection> <atom-selection> <atom-selection>]]]
  --{Add an entry to the current class. Selections define the 
     dihedral angle(s) for that entry.}
  class=<classname>
  --{Starts a new class. Applies to all assignment, expectation,
     force, and size entries until another class entry is issued.}
  compressed
  --{Reads in a complete expectation grid for a class at once.}
  expectation <integer> [<integer> [<integer> [<integer>]]] <real>
  --{Indicates coordinate(s) in the expectation grid and the value
     of that point.}
  error=<real>
  --{Set the square well error for the current class in expectation units.}
  forceconstant=<real>
  --{Force constant for all assignments in the current class.
     Default = 1.}
  nrestraints=<integer>
  --{Number of slots for conformation restraints to allocate in 
     memory. Default = 200.}
  phase <integer> <integer> <integer> [<integer> <integer> <integer> 
       [<integer> <integer> <integer> [<integer> <integer> <integer>]]]
  --{Set phase corrections for the torsion angles involved in the 
     current class.}
  potential=square|harmonic
  --{Use conformation errors or not.}
  print threshold <real> all|class=<classname>
  --{Prints conformation violations greater than the specified value
     for all classes or just for the named class.}
  reset
  --{Erases the conformation assignment table.}
  size oned|twod|threed|fourd <integer> [<integer> [<integer> [<integer>]]]
  --{Defines the number of dimensions in the current class expectation,
     grid and the number of steps along each dimension.}
  zero
  --{Zero out the all the expectation value arrays.}