single argument anova for GLMMs not yet implemented

Dear all,

Sorry if the question i stupid, I'm pretty new to this and have
googled, and tried the help in R without finding a answer.

I have sucsessfully used glmm, lmer {lme4}, family binomial. By using
the summary (mod), I get the parameter estimates, but when using anova
(mod) I get this error message: Error in anova(mod) :  single argument
anova for GLMMs not yet implemented.

I'm used to run lme {nlme} by using both summary () and anova (), is
that impossible when running glmm, lmer {lme4}?

Thanks for help

RS Cotter