![Todd Jones 🦊 on Twitter: "Quick @Stata tip: use "restore, not" to fix the "already preserved" error that arises if you try to preserve the data when already preserved. https://t.co/or0ywWYDba" / Twitter Todd Jones 🦊 on Twitter: "Quick @Stata tip: use "restore, not" to fix the "already preserved" error that arises if you try to preserve the data when already preserved. https://t.co/or0ywWYDba" / Twitter](https://pbs.twimg.com/media/FiXE6uQWQAYgtOl.png)
Todd Jones 🦊 on Twitter: "Quick @Stata tip: use "restore, not" to fix the "already preserved" error that arises if you try to preserve the data when already preserved. https://t.co/or0ywWYDba" / Twitter
![Stata: If I use preserve interactively, can it be used again (nested) in an ado-file? - Stack Overflow Stata: If I use preserve interactively, can it be used again (nested) in an ado-file? - Stack Overflow](https://i.stack.imgur.com/vhf0o.png)
Stata: If I use preserve interactively, can it be used again (nested) in an ado-file? - Stack Overflow
Using STATA This document gives instructions for learning the basics of the Stata econometrics package used in the problem sets
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