"acf": {
  "internal_memo": "",
  "sections": [
    {
       "acf_fc_layout": "standard",
       "title": "(section title)",
       "featured_media": false,
       "section": [
         {
           "content": "(section content)"
         }
       ]
    }
  ],
  "paywall": false,
  "toc": false,
  "subhead": "(subhead)",
  "antescript": "",
  "postscript": "",
  "footnotes": ""
  /* and many more */
}

<wpPostByPermalink>

  <apply template="_post">

    <wpMultisection>
      <wpSections>
        <wpSection>
          <section class="po-cn__section po-wp__section" id="ch-${wpSectionsIndex}">
            <if exists="${wpTitle}">
              <then><h1 class="po-cn__subhead po-wp__subhead"><wpTitle/></h1></then>
              <else><hr class="po-cn__rule po-wp__rule"/></else>
            </if>
            <wpContent/>
          </section>
        </wpSection>
      </wpSections>
    </wpMultisection>

  </apply>

</wpPostByPermalink>

multiSectionFields :: Field Ctxt
multiSectionFields = CN "multisection"
                       ["acf"]
                       [ M "sections"
                         [ F "title"
                         , M "section"
                           [ F "content" ] ] ]

data Field s = F Text -- A single flat text or number field
             | P Text (Text -> Fill s) -- A custom-parsed flat field
             | N Text [Field s] -- A nested object field
             | C Text [Text] -- A text field found by following the specified path
             | CN Text [Text] [Field s] -- Combination of `C` and `N`
             | M Text [Field s] -- A list field, where each element is an object

data Field s = F Text -- A single flat text or number field
             | N Text [Field s] -- A nested object field
             | C Text [Text] -- A nested text field found by following the specified path
             | CN Text [Text] [Field s] -- Combination of `C` and `N`
             | M Text [Field s] -- A list field, where each element is an object
             | P Text (Text -> Fill s) -- A custom-parsed flat text field
             | B Text -- A single flat boolean field
             | CB Text [Text]  -- Combination of `C` and `B`
             | PV Text (Maybe Value -> Fill s) -- A custom-parsed value field
             | PN Text (Object -> Fill s) -- A custom-parsed nested field
             | PM Text ([Object] -> Fill s) -- A custom-parsed list field
             | Q Text IdToEndpoint -- A field that will make another request
             | QM Text IdsToEndpoint -- A list of fields that will make another request

<wpCustom endpoint="wp/v2/posts/${wpId}">
  <ul>  
    <wpTags>
      <li><a href="/tag/${wpSlug}"><wpName/></a></li>
    </wpTags>        
   </ul>
</wpCustom>       

{ id: 43453,
  /* ...lots of other fields... */
  tags: [
	{ name: "Sports", slug: "sports"
	  name: "Bookmarx", slug: "bookmarx" }
   ]
}