_40_RUNS is a DZ root zone. It is storage architecture, not a website section.
| Purpose | Outputs from work and machine-local run products. |
| Use For | Artifacts, builds, previews, test results, toolchain logs, machine backups, and scratch/run output such as _40_RUNS\scratch. |
| Do Not Use For | Source code ownership, durable reference libraries, or root-level scratch folders. |
| Current Top-Level Examples | artifacts, builds, machine-backups, previews, scratch, test-results, toolchain-logs |