Section Calculation Modes::Geometry Optimization
Convergence criterion, for stopping the minimization. In units of length; minimization is stopped when the coordinates of all species change less than GOMinimumMove, or the GOTolerance criterion is satisfied. If GOMinimumMove < 0, this criterion is ignored. Default is -1, except 0.001 b with GOMethod = simplex. Note that if you use GOMethod = simplex, then you must supply a non-zero GOMinimumMove.
main/geom_opt.F90 : 366
call parse_variable(sys%namespace, 'GOMinimumMove', default_toldr, g_opt%toldr, units_inp%length)