> 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/browsing-and-searching/semantic-queries/ecl-editor.md).

# ECL Editor

ECL Editor is available in two different ways:

* SNOMED CT Concept Advanced Search has an embedded editor
* Standalone editor is available from the Project Explorer view

Both editors support the same features. The only difference between the two editors is that the query entered into the embedded editor cannot be saved, while the query entered into the standalone editor can be saved.

### Embedded ECL Editor <a href="#gettingstartedwithsemanticqueries-embeddedecleditor" id="gettingstartedwithsemanticqueries-embeddedecleditor"></a>

Open SNOMED CT Concept Advanced Search by clicking the flashlight icon in the application's main toolbar and selecting *ECL expression*.&#x20;

<figure><img src="/files/HQZ4sxPOZAoqmTPCLrnc" alt=""><figcaption><p>Embedded ECL Editor in Advanced Search Editor</p></figcaption></figure>

### Standalone ECL Editor <a href="#gettingstartedwithsemanticqueries-standaloneecleditor" id="gettingstartedwithsemanticqueries-standaloneecleditor"></a>

To access the standalone ECL Editor in the Project Explorer View, you first need to create a project, and then a file.


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