LDM-592 contains the use cases developed by the Butler Working Group in August. This document has to be reviewed and approved since it is a foundational document for the Butler requirements. I've allocated 2 weeks for this.
The document can be found at: https://docushare.lsst.org/docushare/dsweb/Get/Version-48456/LDM-592.pdf
There is a pull request on github where you can make comments on the text: https://github.com/lsst/LDM-592/pull/1