 writing of content size into frame header (if known)</td>
</tr>
<tr>
<td>‘checksum_flag`</td>
<td>true/false</td>
<td>false</td>
<td>enables writing of 32-bits checksum of content at end of frame</td>
</tr>
<tr>
<td>‘dict_id_flag`</td>
<td>true/false</td>
<td>true</td>
<td>enables writing of dictionary id into frame header</td>
</tr>
<tr>
<td>‘nb_workers`</td>
<td>0 - 200</td>
<td>0 (auto)</td>
<td>number of threads spawned in parallel</td>
</tr>
<tr>
<td>‘job_size`</td>
<td>0 - 1073741824</td>
<td