* <ul>
* <li>#MDB_CURRENT - overwrite the data of the key/data pair to which
* the cursor refers with the specified data item. The \b key
- * parameter is ignored.
+ * parameter is ignored. The \b data size must match the original.
* <li>#MDB_NODUPDATA - enter the new key/data pair only if it does not
* already appear in the database. This flag may only be specified
* if the database was opened with #MDB_DUPSORT. The function will