search direct {<xray-search-direct-statement>} end

<xray-search-direct-statement> :==

  delta=<real>
  --{Angular grid step interval}
  t1min=<real> t1max=<real>
  t2min=<real> t2max=<real>
  t3min=<real> t3max=<real>
  --{The sampling is equidistant in this Euler angle range using the
     interval delta:
     t1min, t1max = theta1 minimum and maximum values
     t2min, t2max = theta2 minimum and maximum values
     t3min, t3max = theta3 minimum and maximum values}
  tpmin=<real> tpmax=<real>
  tmmin=<real> tmmax=<real>
  t2min=<real> t2max=<real>
  --{The sampling will be by the quasi-orthogonal method of Lattman. The
     interval delta is used for theta2
     tpmin, tpmax = theta+ minimum and maximum values
     t2min, t2max = theta2 minimum and maximum values
     tmmin, tmmax = theta- minimum and maximum values}
  psimin=<real> psimax=<real>
  phimin=<real> phimax=<real> 
  kappamin=<real> kappamax=<real>
  --{The sampling will by spherical polar angles
     psimin, psimax = psi minimum and maximum values
     phimin, phimax = phi minimum and maximum values
     kappamin, kappamax = kappa minimum and maximum values}
  output=<filename>
  --{Rotation function output filename.}
  list=<filename>
  --{File for list of highest peaks.}
  nlist=<integer>
  --{Specifies the number of highest peaks of the rotation function that
     will be listed.}
  epsilon=<real>
  --{Epsilon for cluster analysis. This defines a matrix norm to
     determine whether two rotation matrices are close. The default
     value is reasonable for 10 degree grids.}
  symbol=<string>
  --{Root name for the symbol table. If blank to table is created (this is
     the default.}
  symmetry=?|reset|<symmetry-operator>
  --{Define symmetry operators which are required for proper grouping of
     symmetry related peaks during cluster analysis.}
  ?
  --{Prints current parameters and options.}

  --{The following symbols are created upon completion:
       $<symbolname>_nlist - number of peaks
       $<symbolname>_rfvalue_<i> - rotation function value
       $<symbolname>_theta1_<i> - for Eulerian and Lattman mode
       $<symbolname>_theta2_<i> - for Eulerian and Lattman mode
       $<symbolname>_theta3_<i> - for Eulerian and Lattman mode
       $<symbolname>_phi_<i> - for spherical polar angle mode
       $<symbolname>_psi_<i> - for spherical polar angle mode
       $<symbolname>_kappa_<i> - for spherical polar angle mode
     where <i> runs through the clustered peak list.}

  --{The target for the direct rotation search is the current xray target
     which must be defined.}