layout-test.html

<template name="LayoutOne">
  one
</template>

<template name="LayoutTwo">
  two
</template>

<template name="LayoutWithData">
  layout {{title}}
</template>

<template name="LayoutWithDataAndYields">
  layout {{title}}
  {{> yield}}
  {{> yield region="footer"}}
</template>

<template name="LayoutWithOneYield">
layout
{{> yield}}
</template>

<template name="LayoutWithTwoYields">
{{> yield}}
{{> yield region="footer"}}
</template>

<template name="ChildWithData">
child {{title}}
</template>

<template name="FooterWithData">
footer {{title}}
</template>

<template name="One">
  one
</template>

<template name="Two">
  two
</template>

<template name="DefaultMainRegion">
  {{#Layout}}
    ok
  {{/Layout}}
</template>

<template name="ContentForTests">
  main
  {{#contentFor region="footer"}}
    footer
  {{/contentFor}}
</template>