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## Summary of the Pull Request
Spec for #3062
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## PR Checklist
* [ ] Closes #xxx
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [ ] Tests added/passed
* [x] Is documentation
* [ ] Schema updated.
* [x] I work here
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## Detailed Description of the Pull Request / Additional comments
Read the spec
