> For the complete documentation index, see [llms.txt](https://docs.totalmateria.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.totalmateria.com/total-materia-integrator/creator/data-maintenance/reference-types.md).

# Reference Types

Organize and customize your material data by categorizing it into various reference types like Experimental, Standard, Internal standards or any desired name.

To create a new Reference type or edit/delete an existing one, click the "ADD REFERENCE TYPE"<img src="https://276857119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F46tXLAZ8TzcvqYg8Cavu%2Fuploads%2FkUVjyxuFQN6fSHovDGRF%2Fimage.png?alt=media&amp;token=d5301005-4b5b-4d8d-b8fe-9f42db0efbcd" alt="" data-size="line"> or <img src="https://276857119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F46tXLAZ8TzcvqYg8Cavu%2Fuploads%2FtWw5ea4gbEuBVorsPNDW%2Fimage.png?alt=media&amp;token=9ed24546-c1eb-41ba-996e-f9e1f85c3927" alt="" data-size="line"> buttons in the interface. This will open a window in which the "Reference type" (mandatory) and optional "Description" are defined.

<figure><img src="https://276857119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F46tXLAZ8TzcvqYg8Cavu%2Fuploads%2FKllvcdEqNPekHkuMr1sy%2Fimage.png?alt=media&amp;token=ccf5c076-24bf-4807-a21b-58b38a9c2ef0" alt=""><figcaption><p><strong>Figure 1:</strong> Screenshot of Edit Reference Type in Data Maintenance section</p></figcaption></figure>