rt</i>=-1 if all processors do not specify export arrays.
</td>
</tr>

<tr>
<td VALIGN=TOP><i>&nbsp;&nbsp;&nbsp; export_global_ids</i></td>

<td>An array of <i>num_export</i> global IDs of objects to be exported
to new parts.
<br>(size = <i>num_export</i> * <a href="ug_param.html#NUM_GID_ENTRIES">NUM_GID_ENTRIES</a>)
<br>All processors may pass <i>export_global_ids</i>=NULL if 
import lists are provided and 
<i>export_global_ids</i> is not
needed by callback functions
<a href="ug_query_mig.html#ZOLTAN_PRE_M