written through the chain BIO_flush() must be called to finalise the structure.</p>

<p>The <b>CMS_STREAM</b> flag must be included in the corresponding <b>flags</b> parameter of the <b>cms</b> creation function.</p>

<p>If an application wishes to write additional data to <b>out</b> BIOs should be removed from the chain using BIO_pop() and freed with BIO_free() until <b>out</b> is reached. If no additional data needs to be written BIO_free_all() can be called to free up the whole chain.</p>

<p>Any content