> For the complete documentation index, see [llms.txt](https://help.arkance-systems.com/class-feeder/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.arkance-systems.com/class-feeder/eng/manual/element-classification.md).

# Classification of Elements

Class Feeder is operated from *BIM Management* tab -> *Class Feeder* panel -> *Write* button.

<figure><img src="https://4055977359-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEH7axMwLIU8mR7mhmEm0%2Fuploads%2FfBBecIe7jD68zWrnUIdm%2Finterface_ribbon_write.png?alt=media&amp;token=de879079-7c05-4504-aa3f-946e777f46ec" alt=""><figcaption><p>Class Feeder on BIM Management tab</p></figcaption></figure>

### User interface

<figure><img src="https://4055977359-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEH7axMwLIU8mR7mhmEm0%2Fuploads%2FD4xPVs6RShEszIiC64ec%2Finterface_write.png?alt=media&amp;token=fb2b52a6-6494-49be-8ca4-75e581aa90b1" alt=""><figcaption><p>Class Feeder user interface</p></figcaption></figure>

* Selection by category
* Instance selection
* Facet selection
* Search in classification tables
* Classification tables
* Selection from model space
* Graphical tools (model check)
* Filter by facet (model check)
* Filter according to assigned classification (model check)

{% hint style="info" %}
The application loads CCI classification from the internet upon startup. Internet connection is needed for correct operation of the application.
{% endhint %}

{% hint style="info" %}
The Class Feeder Write dialogue window is nonmodal, so it cen be placed on secondary monitor and left open even when working with other Revit tools.
{% endhint %}