Welcome to Snow Owl! The purpose of this User Guide is to give a comprehensive and in-depth description of the various functions of Snow Owl. Each chapter is dedicated to a different functionality or topic. The chapters start out with a general introduction, cover the most common uses and finish up with more advanced features. We hope, that this will help you to find the level of information that fits best to your needs.

Here is an overview of the chapters. To open the chapters, expand the nodes in front of the titles.

• Introduction: Setting up Snow Owl, getting to know the user interface, customising the user Interface, setting application preferences.
• Browsing and Searching: Various ways of searching for SNOMED CT, ATC, ICD-10, LOINC content including semantic searches.
• Editing and Authoring: Creating and changing terminology content in SNOMED CT, ATC, LOINC, Local Code Systems.
• Reference Sets, Subsets and Value Sets: Creating, maintaining, validating groups of concepts.
• Mapping: Simple and complex type maps, mapping sets
• Concept Model: Defining SNOMED CT content, restraining terminology authoring
• Description Logic and OWL: Reasoners, expressibility beyond Snow Owl, concrete domains
• Importing, Exporting and Publishing of releases and extensions
• Collaborative Authoring: Task work flow, dual-independent authoring
• Versioning: Working with different versions of SNOMED CT, Reference sets

If you are looking for a more concise introduction to Snow Owl, we recommend the Getting Started with Snow Owl Guide.