{* *! version 1.0.2  30mar2007}{...}
{phang}
{opt vce(vcetype)} specifies the type of standard error reported, which
includes types that are derived from asymptotic theory, that are robust to
some kinds of misspecification, that allow for intragroup correlation, and
that use bootstrap or jackknife methods; see 
{helpb xt_vce_options:[XT] {it:vce_options}}.
{p_end}
