Level 4 — 1.3.1 Parse sources and calculate yields

One process per source parsed, then 1.3.1.5, 1.3.1.6 and 1.3.1.7, which calculate from what the parses produce. The four flows leaving on the right are the outputs of 1.3.1 at Level 3. Every process here drills to its section of 1.3.1 Parse sources and calculate yields. 1.3.1.3 produces nothing another process here uses: its output leaves 1.3.1 directly, for 1.3.2. The amber circles are shared modules (SharedModules.md), not process steps of this diagram.