> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/connectivity/hru.con/obj_typ.md).

# obj\_typ

The table below lists the spatial objects that can be receiving objects and their respective character codes for specifying the type of receiving object. Recall, Export Coefficient, and Delivery Ratio objects cannot be receiving objects.

| Spatial object | Code |
| -------------- | ---- |
| HRU            | hru  |
| HRU-lte        | hlt  |
| Routing Unit   | ru   |
| Aquifer        | aqu  |
| Channel        | cha  |
| Reservoir      | res  |
| Outlet         | out  |