R packaging started to complain about usage of non-exported functions from packages. lme4 team said they might export this function at some time in future. Until then, I need to copy it.
formatVC(varc, digits = max(3, getOption("digits") - 2), comp = "Std.Dev.",
formatter = format, ...)
variance estimates
digits desired
what do you want
a format function
other arguments
formatted text