{{{head}}} {{^includesSidebar}} {{/includesSidebar}} {{#supportsAmpSelector}} {{/supportsAmpSelector}} {{#document.isAmpStory}} {{/document.isAmpStory}} {{> head.html}} {{{bodyTag}}} {{{elementsAfterBody}}} {{^isEmbed}} {{> ampstart/navbar.snip.html}}

{{subHeading}} {{#metadata.experiments.length}}{{/metadata.experiments.length}}

{{#github}} Edit on Github {{/github}}
{{^metadata.disablePlayground}} Open in Playground {{/metadata.disablePlayground}} {{#urlPreview}} {{#document.isAmpStory}} View Story {{/document.isAmpStory}} {{^document.isAmpStory}} View Demo {{/document.isAmpStory}} {{/urlPreview}}
{{/isEmbed}} {{#supportsAmpSelector}} {{/supportsAmpSelector}}
{{#document.isAmpHtmlEmail}}
{{> about-amp4email.html}}
{{/document.isAmpHtmlEmail}} {{^isEmbed}} {{#metadata.experiments.length}}
{{> experiment.html}}
{{/metadata.experiments.length}} {{/isEmbed}} {{#document.sections}} {{^metadata.hideDoc}} {{#markedDoc}}
{{{markedDoc}}} {{^isEmptyCodeSection}}
{{^metadata.hidePreview}}{{#showPreview}}

Example

{{#storyPageId}} {{/storyPageId}}
{{^storyPageId}} {{^document.isAmpStory}} {{{preview}}} {{/document.isAmpStory}} {{/storyPageId}} {{#storyPageId}}
{{/storyPageId}}
{{/showPreview}}{{/metadata.hidePreview}}
{{{escapedCode}}}
{{/isEmptyCodeSection}}
{{/markedDoc}} {{/metadata.hideDoc}} {{/document.sections}}
{{#supportsAmpSelector}}
{{/supportsAmpSelector}} {{^isEmbed}} {{> ampstart/footer.snip.html}} {{/isEmbed}} {{> footer-boilerplate.html}}