> 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/authoring-mode-selection.md).
# Authoring Mode Selection
The user can easily change between two authoring modes: *Stated relationship based authoring* and *OWL axiom based authoring*. The point of keeping the two authoring modes separated from each other is to prevent the users from performing unintentional, erroneous authoring actions.
There are two ways to select and set the authoring mode.
### Client Startup
The *Adjust SNOMED CT configuration* dialog becomes available to users during client initialization. The second page of this dialog offers the possibility to set the desired authoring mode before the client starts up.
### SNOMED CT Settings Preferences Page
The authoring mode can also be set via the SNOMED CT Settings Page within the client. It can be invoked by clicking on the  icon on the main toolbar., where users can set one of the two authoring modes just as simple as in the previous case.
### Differences between the two authoring modes
#### OWL Axiom based authoring mode:
* In the Concept Editor, on the Overview Page, the Properties section is hidden, unless the concept has stated relationships.
* New stated relationships cannot be added to a concept, users are only allowed to retire them.
* In case of creating a new concept, the new relationships are Owl Axioms.
#### Stated relationship based authoring mode:
* In the Concept Editor, on the Overview Page, the Properties section is always visible, even if it is empty.
* New stated relationships can be added as well.
* In case of creating a new concept, the new relationships are stated relationships.
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