usage_key
| Project | Entry Point |
|---|---|
| edx-ccx-keys | ccx-block-v1 |
| edx-opaque-keys | aside-usage-v1 |
| edx-opaque-keys | aside-usage-v2 |
| edx-opaque-keys | block-v1 |
| edx-opaque-keys | lb |
| edx-opaque-keys | lib-block-v1 |
| edx-opaque-keys | location |
1