Explain Step

Read a function or code block and produce a deterministic numbered step-by-step explanation of its business-level flow, with sub-steps that explain how each step works internally.

The core guarantee: given the same unchanged code, every run must produce the same steps, in the same order, covering the same content.

Two Levels of Explanation

Every output has two layers:

• Top-level steps: What the function does — one step per business concern/entity (grouped by domain concept)
• Sub-steps (N.1, N.2, ...): How the step works internally — the distinct operations inside that step

This gives the reader both the big picture and the mechanics without being code-level verbose.

Step Derivation Algorithm

Follow this algorithm exactly.

1. Identify the function boundary