namelist is the name given to previously stored estimation results, a list of names, _all, or *. A name may be ., meaning the current (active) estimates. _all and * mean the same thing.
3、esttab命令才有using的选项
help esttab (SJ14-2: st0085_2)
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Title
esttab -- Display formatted regression table
Syntax
esttab [namelist] [using filename] [, options]
where namelist is a name, a list of names, or _all. The * and ? wildcards are allowed in namelist. A name may also be ., meaning the current (active) estimates.