* the OS buffers upon commit as well, unless the environment was
* opened with #MDB_NOSYNC.
* @param[in] env An environment handle returned by #mdb_env_create()
- * @param[in] force If non-zero, force the flush to occur. Otherwise
+ * @param[in] force If non-zero, force a synchronous flush. Otherwise
* if the environment has the #MDB_NOSYNC flag set the flushes
- * will be omitted.
+ * will be omitted, and with #MDB_MAPASYNC they will be asynchronous.
* @return A non-zero error value on failure and 0 on success. Some possible
* errors are:
* <ul>