# Syntax

URL: /docs/syntax/
Section: syntax
Tags: syntax, templates

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Syntax Kida's template syntax for expressions, control flow, and composition. Quick Reference Element Syntax Example Output &#123;&#123; expr &#125;&#125; &#123;&#123; user.name &#125;&#125; Tags &#123;% tag %&#125; &#123;% if %&#125;, &#123;% for %&#125; Block end &#123;% end %&#125; Unified ending Comments {# text #} {# TODO #} Filters | filter &#123;&#123; name \| upper &#125;&#125; Pipeline |&gt; filter &#123;&#123; x \|> a \|> b &#125;&#125; Syntax Guide Variables Output expressions and access patterns {{ name }}, {{ user.email }}, {{ items[0] }} Git Branch Control Flow Conditionals, loops, and pattern matching &#123;% if %&#125;, &#123;% for %&#125;, &#123;% match %&#125; Filter Filters Transform values in expressions {{ name | upper }}, {{ items | join(', ') }} Function Functions Define reusable template functions &#123;% def greet(name) %&#125;, &#123;% macro %&#125; Inheritance Extend and override base templates &#123;% extends %&#125;, &#123;% block %&#125; Includes Include partials and components &#123;% include %&#125;, context passing Database Caching Block-level output caching &#123;% cache key %&#125;...&#123;% end %&#125; Async Async iteration and await async for, await, async templates Key Features Unified &#123;% end %&#125; — Clean, consistent block endings Pattern matching — &#123;% match status %&#125;&#123;% case &quot;active&quot; %&#125;...&#123;% end %&#125; Pipeline operator — &#123;&#123; title |> escape |> upper |> truncate(50) &#125;&#125; Built-in caching — &#123;% cache &quot;sidebar&quot; %&#125;...&#123;% end %&#125;

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