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To create that block, try adding the "Set Position From Map" and then, in the Inspector, change the "Composition Position" from "Set" to "Add".
Thanks Chris!
In 2019.1.5f1, I am attempting to work with a new terrain. Getting it laid out and painted went smoothly but the sculpting tools are just missing....
2019 breaks a lot of the 2D tutorials. Stick with 2018.3 and you'll save yourself a lot of aggravation.