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If you're specifically looking for Stata 12, consider the following:
There are several reasons why someone might opt to download a repackaged version of Stata 12:
Always label your new features so you don't forget their meaning: label variable income_log "Natural log of annual income"
Avoid "repack" downloads from unverified third-party sources (torrents or "warez" sites). These often contain modified executables that pose significant security risks, including malware or data-stealing scripts. specific syntax for a command that was introduced in Stata 12? Archive - Stata 12