# Experimental CMMF 1.3.0-beta.1 > Exact-edition documentation and normative sources. For existing projects, respect the manifest version; never silently upgrade. For new projects use current stable unless experimental is explicitly requested. Specifications are normative; tutorials explain them. Numeric specVersion: 1 means original legacy. Skills helpers do not support beta semantics. Model checks do not validate content or prove CMS translations lossless. Upstream revision: a0c7a3d87fe46d74b5e78ac851e8b156201376a4. Tool guidance is shared separately. ## Normative sources - [CMMF 1.3.0-beta.1 specification](https://cmmf.dev/raw/1.3.0-beta.1/spec/cmmf-v1.3.0-beta.1.md): Article: https://cmmf.dev/spec/1.3.0-beta.1/ - [Translation contract 1.3.0-beta.1](https://cmmf.dev/raw/1.3.0-beta.1/spec/translation-contract-v1.3.0-beta.1.md): Article: https://cmmf.dev/spec/1.3.0-beta.1/translation-contract/ - [Model schema](https://cmmf.dev/schemas/1.3.0-beta.1/model.schema.json) ## Explanations and complete examples - [Documentation](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/index.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/ - [Model kinds](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/concepts/model-kinds.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/concepts/model-kinds/ - [Relationships and composition](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/concepts/relationships.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/concepts/relationships/ - [Translation](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/concepts/translation.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/concepts/translation/ - [Create your first model set](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/get-started/first-model.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/get-started/first-model/ - [Organise a model project](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/get-started/project-structure.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/get-started/project-structure/ - [Follow the model visually](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/get-started/visual-modelling.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/get-started/visual-modelling/ - [Adopting the 1.3 beta](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/adopt-1-3-beta.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/adopt-1-3-beta/ - [Document-level validation hints](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/document-validation-hints.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/document-validation-hints/ - [Preserve editorial intent](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/editorial-intent.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/editorial-intent/ - [Embed or reference?](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/embed-or-reference.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/embed-or-reference/ - [Understand validation errors](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/errors.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/errors/ - [Model what needs localisation](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/localisation.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/localisation/ - [Migrate a model set to 1.2.0](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/migrate-to-1-2.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/migrate-to-1-2/ - [Give rich text a clear job](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/rich-text.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/rich-text/ - [Validation](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/validation.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/validation/ - [See the model as a system](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/guides/visualisation.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/guides/visualisation/ - [Canonical field types](https://cmmf.dev/raw/1.3.0-beta.1/site/docs/reference/canonical-types.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/docs/reference/canonical-types/ - [Example model sets](https://cmmf.dev/raw/1.3.0-beta.1/site/examples/index.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/examples/ - [Article and Subscription model set](https://cmmf.dev/raw/1.3.0-beta.1/site/examples/article.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/examples/article/ - [Customer Story](https://cmmf.dev/raw/1.3.0-beta.1/site/examples/customer-story.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/examples/customer-story/ - [Content modelling glossary](https://cmmf.dev/raw/1.3.0-beta.1/site/learn/glossary.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/learn/glossary/ - [Start with the content, keep the intent](https://cmmf.dev/raw/1.3.0-beta.1/site/learn/why-cmmf.md): Article: https://cmmf.dev/versions/1.3.0-beta.1/learn/why-cmmf/ - [Customer Story project](https://cmmf.dev/downloads/examples/1.3.0-beta.1/customer-story.zip) - [Article project](https://cmmf.dev/downloads/examples/1.3.0-beta.1/article.zip) ## Reference packs and shared tools - [Edition documentation pack](https://cmmf.dev/downloads/documentation/1.3.0-beta.1.zip) - [Shared tool guidance](https://cmmf.dev/raw/site/tools/index.md): Compatibility is specified per tool.