Documentation & Feature Clarification for Specific v$sqlcommand CMD_TYPEs (Oracle 21c)

Specific Command Clarification Needed

We need the explicit SQL syntax for execution via SQL*Plus for the following CMD_TYPE entries found in v$sqlcommand. If a direct SQL statement is not available for any command, please provide an official statement to that effect and explain the technical reason for its inclusion in v$sqlcommand.

CMD_TYPE (from v$sqlcommand)	Clarification Required
CREATE BITMAPFILE	Exact SQL syntax needed.
CREATE PMEM FILESTORE	Exact SQL syntax needed (or reference to the correct DDL command).
UPSERT	Confirmation if a distinct UPSERT command exists, or if MERGE is the definitive implementation.
UPDATE JOIN INDEX