What's up with CU_LIBRARY_HOST_UNIVERSAL_FUNCTION_AND_DATA_TABLE?

Starting with CUDA 12, we can load libraries, which are basically non-context-specific modules.

The API for loading a library lets us specify options for this loading; and the first such option is named: CU_LIBRARY_HOST_UNIVERSAL_FUNCTION_AND_DATA_TABLE.

However, it is not documented, nor does it say what its default value is, or how we’re supposed to decide what to set it to, given a fatbin or cubin file. Can someone shed some light on this?