{* *! version 1.0.0  12may2011}{...}
    {cmd:dofm(}{it:e_m}{cmd:)}
{p2colset 8 22 26 2}{...}
{p2col: Domain {it:e_m}:}{cmd:%tm} dates 0100m1 to 9999m12
           (integers -22,320 to 96,479){p_end}
{p2col: Range:}{cmd:%td} dates 01jan0100 to 01dec9999
           (integers -679,350 to 2,936,519){p_end}
{p2col: Description:}returns the {it:e_d} date (days since 01jan1960) of
           the start of month {it:e_m}.{p_end}
{p2colreset}{...}
