Hi Statalist
In many of the questions posted, the following syntax has been used: e.g. $covariates or $xlist. Can I please ask 1) what exactly does the $ symbol do in a Stata command and 2) how does one go about creating something like $xlist?
I have tried - help $ - and googling search terms like "Stata what does $ mean" but haven't yet found the answers.
Thanks.
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