If no more data is available or an error occurs, this function is
expected to return NULL.
The B<OSSL_STORE_eof_fn> and B<OSSL_STORE_error_fn> functions must indicate if
-it was in fact the end of data or if an error occured.
+it was in fact the end of data or if an error occurred.
-Note that this function retrives I<one> data item only.
+Note that this function retrieves I<one> data item only.
=item B<OSSL_STORE_eof_fn>