2021-01-08 Dear HLPW-4/GMGW-3 TFG member, A minor clarification has been made to the Test Case Document, which is now at V15. Previously, for case 1b, it said: “solutions should be provided for at least one family of coarse, medium, and fine workshop-provided meshes” But this was unclear, since in this workshop we are providing additional grids with different designations. Therefore, the phrase now reads: "solutions should be provided for at least three of the workshop-provided family of meshes (the finest set of consecutively-refined meshes that you are able to run)"