---
title: Model I/O Structures
framework: modelio
role: collectionGroup
role_heading: API Collection
path: modelio/model-i-o-structures
---

# Model I/O Structures

## Topics

### Structures

- [MDLVoxelIndexExtent](modelio/mdlvoxelindexextent.md)

## See Also

### Reference

- [Model I/O Data Types](modelio/model-i-o-data-types.md)
- [Model I/O Enumerations](modelio/model-i-o-enumerations.md)
- [Model I/O Constants](modelio/model-i-o-constants.md)