optimize group {<xray-optimize-group-statement>} end
<xray-optimize-group-statement> :==
?
Print current parameters and options.
drop=<real>
Expected initial drop in energy. Default=10
nstep=<integer>
Number of conjugate gradient minimization steps. Default=0
tolerance=<real>
Minimum gradient that forces exit of optimization. Default=0.000001
qmin=<real>
Minimum allowed occupancy. Default=0.01
qmax=<real>
Minimum allowed occupancy. Default=10.0