"design code" meaning in English

{
  "forms": [
    {
      "form": "design codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "design code (plural design codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2021, Robert Cowan, Essential Urban Design",
          "text": "Although a design code governs Upton's overall character, the character of the buildings is determined by individual builders and architects.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A set of rules on design of buildings and public spaces."
      ],
      "id": "en-design_code-en-noun-cH6v4qxi",
      "links": [
        [
          "rule",
          "rule"
        ],
        [
          "design",
          "design"
        ],
        [
          "building",
          "building"
        ],
        [
          "public space",
          "public space"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "regulations on design",
          "word": "suunnittelusäännöstö"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "dizajn-kod",
          "sense": "regulations on design",
          "word": "дизайн-код"
        }
      ]
    }
  ],
  "word": "design code"
}

{
  "forms": [
    {
      "form": "design codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "design code (plural design codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2021, Robert Cowan, Essential Urban Design",
          "text": "Although a design code governs Upton's overall character, the character of the buildings is determined by individual builders and architects.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A set of rules on design of buildings and public spaces."
      ],
      "links": [
        [
          "rule",
          "rule"
        ],
        [
          "design",
          "design"
        ],
        [
          "building",
          "building"
        ],
        [
          "public space",
          "public space"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "regulations on design",
      "word": "suunnittelusäännöstö"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "dizajn-kod",
      "sense": "regulations on design",
      "word": "дизайн-код"
    }
  ],
  "word": "design code"
}