 be reused by OSSL_STORE_load() to manipulate or drop the value to be returned. The <i>post_process</i> function drops values by returning NULL, which will cause OSSL_STORE_load() to start its process over with loading the next object, until <i>post_process</i> returns something other than NULL, or the end of data is reached as indicated by OSSL_STORE_eof().</p>

<p>OSSL_STORE_ctrl() takes a <b>OSSL_STORE_CTX</b>, and command number <i>cmd</i> and more arguments not specified here. The available loader spec