> For the complete documentation index, see [llms.txt](https://docs.b2ihealthcare.com/snow-owl-authoring-platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.b2ihealthcare.com/snow-owl-authoring-platform/editing-and-authoring/snomed-ct-concept-editor/overview-page.md).

# Overview Page

The Overview Page shows information about the concept's descriptions, relationships, and metadata. It is comprised of three sections:

| Section                  | Description                                                                             |
| ------------------------ | --------------------------------------------------------------------------------------- |
| **Descriptions**         | Clinical phrases that describe a concept                                                |
| **Properties**           | Relationships to other concepts and datatype properties (characteristic type indicated) |
| **SNOMED CT Properties** | Metadata about the concept, like its status, effective date, and module                 |

The sections can be expanded or collapsed by clicking on the section title. 

{% hint style="info" %}
Next to the section header, dark blue triangles indicate whether the section is collapsed or expanded.
{% endhint %}

![Collapsed Description Section](/files/FS9pjIlDDAq8hwHBZiE2)

The blue triangles bring up a Context Menu with editing functions (e.g. create a copy of a description).

![Displaying Context Menu Actions](/files/UkIAS6HokPViLGphvO9X)

### Authoring and browsing modes

Snow Owl can be set to operate in two different modes. A toggle button enables the switching between authoring (stated) and browsing (inferred) views. The selected view is applicable universally throughout the application.

![Authoring mode: Authoring is permitted when the lock is unlocked](/files/asExDRlm33U3gi0uFbeS)

![Browsing mode: Authoring is not permitted when the lock is locked](/files/dPLbNY5hqHDiojn8AdiK)

Switching between the two different modes changes the SNOMED CT Concept Editor to display stated and additional characteristic types in authoring mode, or inferred and additional characteristic types in browsing mode. When authoring mode is selected, the editor allows modifications to the concept by enabling the addition of both sanctioned and unsanctioned attributes. The attribute editing fields are powered by the Machine-Readable Concept Model (MRCM), where for any particular concept domain, various attribute and concrete domain constraints are specified. The editing is not limited to pre-defined attributes only, users can always deviate from the model if necessary.

![Concept Editor in Authoring Mode](/files/CMSiUizfTDkBpJgyWD6Y)

![Concept Editor in Browse Mode](/files/zwBPBcxugOXQsdWDVaQt)


---

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