====== 5.1 Overview ====== [[fxdemo:04-part:05-phase-0-implementation-principles:start | Go To Phase 0 Implementation Principles ]] The Phase 0 Implementation Profile uses implementation principles to preserve the relationship between the FX Demo Logical Profile and the selected Phase 0 implementation artifacts. These principles prevent implementation choices from redefining conceptual, logical, or FX Demo Logical Profile elements. They also establish the discipline required before coding begins. Phase 0 implementation work must preserve [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|traceability]], follow the Developer Handbook, distinguish generated artifacts from hand-authored artifacts, use explicit interfaces, preserve [[dido:99_annexes:annex-b-terms-and-definitions:r:runtime_plane|Runtime Plane]] discipline, and prepare observable behavior before Part 5 defines runtime [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|evidence]]. ---- © 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.