BaseMap:Basic Usage

Build 852 on 2131-clean-up-stories-to-fully-enable-chromatic
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Baseline History
Build 852bab0b35
Current build. There are unaccepted changes, so build 842 is still the baseline.
Build 8426623eea current baseline
Accepted by Zach Stence.
Commenting is disabled because there's a newer build on this branch