btrap                   Bootstrap standard errors for the group fixed
                        effects
compfactor              Find the connected components
demeanlist              Centre vectors on multiple groups
efactory                Create estimable function
felm                    Fitting linear models with multiple group fixed
                        effects
getfe                   Retrieve the group fixed effects
is.estimable            Verify estimability of function
kaczmarz                Solve a linear system defined by factors
lfe-package             Linear Group Fixed Effects
