{smcl}
{p 0 4}
{help contents:Top}
> {help contents_programming_matrices:Programming and matrices}
> {help contents_programming:Programming}
> {help contents_subroutines:Subroutines}
{bind:> {bf:Longitudinal/panel data}}
{p_end}
{hline}

{title:Help file listings}

{p 4 8 4}
{bf:{help _xt:Verify that data have been {cmd:xtset}}}{break}
    Quickly verify and obtain the current panel and time variables

{hline}
