| NumTargetPIDs = INT | Defines the number of parts in the target mesh which are considered within the mapping. This option must be followed by TargetPID#i definitions. |
| TargetPID#i = INT | Defines as many part IDs as given in NumTargetPIDs. These parts are considered for the mapping. |
| NumSourcePIDs = INT | Defines the number of parts in the source mesh which are considered within the mapping. This option must be followed by SourcePID#i definitions. |
| SourcePID#i = INT | Defines as many part IDs as given in NumSourcePIDs. These parts are considered for the mapping. |
Note: The above options narrows the scope of the mapping procedure to defined part IDs. Other parts are ignored on both source and target side.