start</strong> [<em>yes|no</em>]
</dt>
<dd>
<p>
exactly match the sequence descriptions from the input files for the desired sequence IDs (in GFF3) from the beginning to the first whitespace (default: no)
</p>
</dd>
<dt class="hdlist1">
<strong>-usedesc</strong> [<em>yes|no</em>]
</dt>
<dd>
<p>
use sequence descriptions to map the sequence IDs (in GFF3) to actual sequence entries.
If a description contains a sequence range (e.g., III:1000001..2000000), the first  part is used as sequence ID (<e