Stata16使用这段代码：

estout *, title("The Comparison of Actual Parameter Values") ///
    cells(b(star fmt(%9.3f)) se(par)) ///
    stats(N N_g, fmt(%9.0f %9.0g) label(N Groups)) ///
    egend collabels(none) varlabels(_cons Constant) keep(X1 X2 D)

显示：

estout *, title("The Comparison of Actual Parameter Values") ///

option / not allowed

r(198);

cells(b(star fmt(%9.3f)) se(par)) ///

command cells is unrecognized

r(199);

stats(N N_g, fmt(%9.0f %9.0g) label(N Groups)) ///

command stats is unrecognized

r(199);

legend collabels(none) varlabels(_cons Constant) keep(X1 X2  D)

command legend is unrecognized

r(199);

用findit也找不到cells、stats、legend

请问各位大佬，代码怎么修改