"van de hoed en de rand weten" meaning in Dutch

{
  "etymology_text": "Literally, “to know about the hat and its rim”. First attested in the 1950s.",
  "head_templates": [
    {
      "args": {},
      "expansion": "van de hoed en de rand weten",
      "name": "nl-verb"
    }
  ],
  "inflection_templates": [
    {
      "args": {
        "1": "weten"
      },
      "name": "nl-conj-see"
    }
  ],
  "lang": "Dutch",
  "lang_code": "nl",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Dutch entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "1978 March, “Prikken voor de tropen”, in De Kampioen, volume 93, number 3, page 234",
          "text": "Ons land kent twee instellingen die van de hoed en de rand weten als het om vaccinaties voor tropische landen gaat: het Koninklijk Instituut voor de Tropen en de KLM.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "to be well informed"
      ],
      "id": "en-van_de_hoed_en_de_rand_weten-nl-verb-CZSBt-9I",
      "links": [
        [
          "well",
          "well"
        ],
        [
          "informed",
          "informed"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, intransitive) to be well informed"
      ],
      "tags": [
        "idiomatic",
        "intransitive"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/vɑn də ˈɦut ɛn də ˈrɑnt ˈʋeːtə(n)/"
    }
  ],
  "word": "van de hoed en de rand weten"
}

{
  "etymology_text": "Literally, “to know about the hat and its rim”. First attested in the 1950s.",
  "head_templates": [
    {
      "args": {},
      "expansion": "van de hoed en de rand weten",
      "name": "nl-verb"
    }
  ],
  "inflection_templates": [
    {
      "args": {
        "1": "weten"
      },
      "name": "nl-conj-see"
    }
  ],
  "lang": "Dutch",
  "lang_code": "nl",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Dutch entries with incorrect language header",
        "Dutch idioms",
        "Dutch intransitive verbs",
        "Dutch lemmas",
        "Dutch multiword terms",
        "Dutch terms with IPA pronunciation",
        "Dutch terms with quotations",
        "Dutch verbs",
        "Requests for translations of Dutch quotations"
      ],
      "examples": [
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "1978 March, “Prikken voor de tropen”, in De Kampioen, volume 93, number 3, page 234",
          "text": "Ons land kent twee instellingen die van de hoed en de rand weten als het om vaccinaties voor tropische landen gaat: het Koninklijk Instituut voor de Tropen en de KLM.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "to be well informed"
      ],
      "links": [
        [
          "well",
          "well"
        ],
        [
          "informed",
          "informed"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, intransitive) to be well informed"
      ],
      "tags": [
        "idiomatic",
        "intransitive"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/vɑn də ˈɦut ɛn də ˈrɑnt ˈʋeːtə(n)/"
    }
  ],
  "word": "van de hoed en de rand weten"
}