Here you'll see the Dragon1 core symbols we use in the diagrams throughout the Help Pages:
Document
Stakeholder
Need
Requirement
Value
Goal
Owner/Client
Architecture
Structure
Concept
Principle
Element
Component
Function
Person
Human
Animal
Robot
Machine
Product
Service
Process
Activity
Application
Interface
Case
actor
Role
System
Program
Project
Milestone
Deliverable
Time
Cost
Resource