| Annotation | A visual marker (pin, shape, or text) placed on a 3D model or 2D drawing, with a threaded discussion |
| Artifact | Any file attached to a node — CAD files, PDFs, images, or documents |
| Attribute | A custom metadata field on a node (e.g., weight, material, cost) |
| BOM | Bill of Materials — a list of parts extracted from a CAD assembly |
| Component | The lowest level in a node hierarchy, typically an individual part |
| Design session | A recorded brainstorming or decision-making session linked to nodes |
| Embedding | A vector representation of content used for semantic search |
| Live session | A real-time collaborative viewing session for 3D models |
| Node | A single item in the system architecture tree (system, subsystem, or component) |
| Organization | The top-level entity — your company or team |
| Permission group | A named group of members with shared program access |
| Program | A project or product within an organization |
| Requirement | A documented need or constraint, tracked in a requirement table |
| SCS | Stream Cache Server format — the format used for browser-based 3D viewing |
| Semantic search | Search that understands meaning, not just keyword matching |
| Subsystem | A mid-level node grouping related components |
| System | A top-level node representing a major assembly or subsystem |
| Traceability | Links between requirements, nodes, and artifacts showing how they relate |