aic                     AIC
backward                Backward step
bic                     BIC
bigstep                 Model selection
fast_forward            Fast-forward step
forward                 Forward step
maic                    mAIC
maic2                   mAIC2
mbic                    mBIC
mbic2                   mBIC2
multi_backward          Multi-backward step
prepare_data            Data preparation
reduce_matrix           Reducing number of variables
stepwise                Stepwise
summary.big             Summarizing model fit
