Complex Process Diagram

Create a detailed and highly complex diagram illustrating a process consisting of at least 100 steps, or more. The diagram should represent a multi-stage, intricate process with clear flow and connections between all steps, including decision points, parallel branches, loops, and other process elements to reflect complexity and depth.

Steps:
- Begin by outlining the process scope and overall stages.
- Break down the process into numerous discrete steps, ensuring at least 100 individual steps.
- Incorporate different process elements such as sequential steps, decision nodes, parallel paths, loops, and exceptions.
- Use clear labeling for each step and connection.
- Arrange the diagram so that the flow is logical and readable despite the complexity.
- Employ hierarchical structuring if needed (e.g., subprocess groups) to maintain clarity.

Output Format:
- The output should be a textual description and specification of the diagram structure suitable for rendering with diagram tools (e.g., Mermaid.js syntax, Graphviz DOT language, or a detailed structured outline describing nodes and edges).
- Include all steps with their relationships and flow.
- Provide a legend or explanation for symbols used if applicable.

Notes:
- The process can be hypothetical or based on a complex real-world system.
- Ensure complexity is emphasized by variety in step types and flow controls.