# Glossary

Term	Definition
Accuracy score	A number score added to diagrams or objects that check if any reality links are out-of-date or inaccuracy comments have been added. See accuracy-score for more.
Actor	Level 1 in the C4 model - The end user who uses the systems.
App	Level 2 in the C4 model - A deployable &/or runable service or client that lives within a system (a type of C4 container - not Docker).
C4 model	A simple set of hierarchical abstractions and diagram types to communicate complex systems. Designed to be accessible to technical and non-technical people. See modelling for more.
Component	Level 3 of the C4 model - The building blocks/modules that make up the container.
Diagram flow	A sequence of events flowing through an existing diagram - you can have multiple on 1 diagram. See flows for more.
Domain	Level 0 for the C4 model - An optional way to split up your model and related diagrams into logical groupings while keeping the benefits of a single shared model. See domains for more.
Draft	A diagram shows siloed changes that have not been merged into the main model—a great way to plan future architecture changes with multiple options without affecting all other diagrams. See draft-current-vs-future-state for more.
Landscape	A landscape is a shared model and set of diagrams containing internal and external objects in your organization at varying levels of detail. See landscape for more.
Landscape recommendations	A score to help polish your documentation and make them more easily understandable to your readers. See recommendation for more.
Model	The shared library of model objects, connections and meta data used to draw references from in the diagrams.
Model objects	The actors, systems, apps, stores and components used to describe how your system design works.
Organization	The owning group of everything you create in IcePanel including users, landscapes, models, model objects, diagrams.
Ownership team	Groups of users within your organization that can be assigned ownership of model objects. See ownership-teamsfor more.
Share link	Auto-updated URL share links of your design. See sharing for more.
Store	Level 2 in the C4 model - A deployable &/or runable database or store that lives within a system (a type of C4 container - not Docker).
System	Level 1 in the C4 model - The highest level of abstraction in the C4 model that delivers value to end users. Often owned by a development team.
Tag group	A group of metadata tags highlights different perspectives within the diagrams. See perspective-tags for more.
Tags	A metadata tag can be added to objects to visualize diagrams dynamically and filter the model. See perspective-tags for more.
Version	A frozen past version or current latest editable design of your landacape. See versioning for more.