> 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/evaluating-changes.md).

# Evaluating Changes

Changes can be reviewed by checking a component's history in the History View. To learn more, please visit the following chapter:

{% content-ref url="/pages/-MX7RPtY4HR1X\_W4pVRz" %}
[Concept History](/snow-owl-authoring-platform/editing-and-authoring/evaluating-changes/concept-history.md)
{% endcontent-ref %}

To be sure that all the modifications are correct Snow Owl provides validation during the editing process and afterward by running validation scripts as well. To learn more, please visit the following chapter:

{% content-ref url="/pages/-MX7RYp6EPb5ek\_o5NgO" %}
[Validation](/snow-owl-authoring-platform/editing-and-authoring/evaluating-changes/validating-concepts.md)
{% endcontent-ref %}

There is also a way to verify if the newly created components are semantically valid and if they maintain the consistency and coherence of the ontology. To learn more, please visit the following chapter:

{% content-ref url="/pages/-MX7RnIEBt4Jq0vDp9Fd" %}
[Classification](/snow-owl-authoring-platform/editing-and-authoring/evaluating-changes/classifying.md)
{% endcontent-ref %}