According to https://codap-server.concord.org/help/work-documents-create-open-save-and-share-documents/use-url-parameters-to-modify-codaps-behavior
the documentation says:
di is a URL parameter that opens CODAP with a specified plugin (or "data interactive") added to the document. To turn on inbounds, add ?di=[URL for plugin] to the URL.
The sentence that reads "to turn on inbounds, add ?di=..." seems to be a copy paste error.