I have *not* yet incorporated any of the further changes that were brought up during the last telecon. As best I recall, those included: o Remove 'in_entity_set' output array from iMesh_getAdjEntities o Remove redundant/unnecessary size arguments from: iMesh_getAdjTable : adjacency_table_size iMesh_getVtxArrCoords* : coords_size iMesh_getAdjEntities : offset_size iMesh_getEntArrTopo : topology_size iMesh_getEntArrType : type_size iMesh_getEntArrAdj : offset_size iMesh_getEntArr2ndAdj : offset_size iMesh_getAdjEntIndices : offset_size iMesh_isEntArrContained: is_contained_size iMesh_setVtxArrCoords* : new_coords_size iMesh_createVtxArr : new_vertex_handles_size iMesh_createEntArr* : new_entity_handles_size iMesh_getArrData** : tag_values_size iMesh_getIntArrData** : tag_values_size iMesh_getDblArrData** : tag_values_size iMesh_getEHArrData** : tag_values_size iMesh_setArrData** : tag_values_size iMesh_setIntArrData** : tag_values_size iMesh_setDblArrData** : tag_values_size iMesh_setEHArrData** : tag_values_size iMesh_getData** : tag_value_size iMesh_setData** : tag_value_size * Do we want to change the vertex coordinate functions? The caller can determine the number of coordinate values as the number of vertices times the geometric dimension. ** Do we want to change the tag data functions? The caller can determine the size by querying the tag size and multiplying by the number of entities. Also, should we remove the *_allocated argument corresponding to each of the *_size arguments listed above? It is unnecessary. For the two cases: a) Caller passes in NULL pointer - implementation allocates array - allocated size is always the same as occupied size (which the caller knows) b) Caller passes in non-NULL pointer - implementation copies data into passed array - caller already knows the required size for the array Of course, if the caller already knows the size I wonder why we need to offer the option of allocating the array at all. If the caller wants it allocated they can do so themselves, as they're responsible for freeing it anyway. - jason -- "A foolish consistency is the hobgoblin of little minds" - Ralph Waldo Emerson