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Area groups /books/layouts-and-components/areas-groups-attributes/area-groups Decide between a custom field and a layout area Areas are for content an author composes on a record that has a layout; custom fields are for structured attributes on records that do not. Pages and posts take areas; people, menus, categories, tags and SEO settings take fields. /how-to/custom-field-or-area A new layout area is not showing on the editing form /faq/question/a-new-layout-area-is-not-showing-on-the-editing-form Where custom fields attach /books/content-types/fields/where-custom-fields-attach The image object /books/layouts-and-components/images/image-object Safe defaults, placeholders and the adaptive component /books/layouts-and-components/patterns/defaults-and-adaptive Category and editor decide behaviour /books/layouts-and-components/inputs/input-types Select options, keys and design tokens /books/layouts-and-components/inputs/select-options Record and records pickers /books/layouts-and-components/inputs/record-pickers Components and collections /books/layouts-and-components/components-and-collections/components MCP, for editors and agents /books/apis/model-context-protocol/mcp When a custom entity beats a page /books/content-types/custom-entity-types/custom-entities The area getters and what each costs /books/layouts-and-components/rendering-areas/area-getters Testing whether an area is empty /books/layouts-and-components/rendering-areas/testing-for-empty The shorthand and live preview /books/layouts-and-components/shorthand/shorthand-live-preview Text, select and switch areas in templates /books/layouts-and-components/shorthand/area-input-types Files, records and component areas /books/layouts-and-components/shorthand/files-records-blocks Picture tags and responsive sources /books/layouts-and-components/images/picture-tags-and-optimisation Connecting your editor to the MCP server /books/start-here/setting-up/mcp-in-your-editor Client-side code /books/theme-repo/client-side-code Global components /books/layouts-and-components/components-and-collections/global-components Computed blocks with the query helper /books/layouts-and-components/components-and-collections/computed-blocks From an image area to an image /books/layouts-and-components/images/image-from-an-area Attributes: settings, not content /books/layouts-and-components/areas-groups-attributes/attributes The collection loop and rendering a component /books/layouts-and-components/components-and-collections/collection-loop Versioned content and the live revision /books/apis/writing-content/versioned-content Text, multiselect values and dates /books/layouts-and-components/rendering-areas/text-values-dates Area introspection, raw content and attributes /books/layouts-and-components/rendering-areas/introspection-raw-and-attributes Dates, numbers, colours and code areas /books/layouts-and-components/shorthand/dates-numbers-colours-code Pattern: heading levels and load priority /books/layouts-and-components/patterns/heading-levels-and-load-priority Validation and default content /books/layouts-and-components/areas-groups-attributes/validation-and-defaults Multi-step forms /books/forms/building/multi-step-forms Images, files, records and collections /books/layouts-and-components/rendering-areas/media-references-structure Migration paths /books/choosing-how-to-build/making-the-choice/migration-paths Change one area of a page without touching the rest patchRevision copies the live revision and changes only the layout areas you name. Send originRevision, the layout area as areaContent(name), and activeRevision: true inside the patch: the change goes live in one request, and every other area, collections included, stays as it was. /how-to/change-one-area Your first page, end to end /books/start-here/first-page-end-to-end Building B2B features with custom entities and jobs /books/commerce/b2b/custom-b2b-features Predicting an endpoint /books/apis/rest/rest-api Records in templates /books/theme-repo/rendering Rename or retire a layout area without losing author content Content is stored against the layout area, not its name, so a rename keeps content and breaks templates; retire by hiding, never deleting; and change a type across categories by adding a new area and moving the content. /how-to/rename-or-retire-an-area Author content disappeared after I renamed a layout area /faq/question/author-content-disappeared-after-i-renamed-a-layout-area From zero to a deployed change /books/start-here/setting-up Writing areas /books/apis/writing-content/writing-areas patchRevision, revisions, or a revision by id /books/apis/writing-content/choosing-a-write Previewing unpublished content /books/content-types/publishing/previewing Defining a custom entity /books/content-types/custom-entity-types/defining Which engine a site uses /books/start-here/setting-up/which-engine The vocabulary every page assumes /books/start-here/building-on/vocabulary-and-urls Product, description and variant /books/commerce/products/catalogue My layout does not appear in the picker when I create a page /faq/question/my-layout-does-not-appear-in-the-picker-when-i-create-a-page