"IIII" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "numeral"
      },
      "expansion": "IIII",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "the Roman numeral for four (4)",
          "word": "IV"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual terms with 3 consecutive instances of the same letter",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Translingual terms with 4 consecutive instances of the same letter",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Four",
          "orig": "mul:Four",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of IV: the Roman numeral for four (4)."
      ],
      "id": "en-IIII-mul-num-FKhBG0VC",
      "links": [
        [
          "IV",
          "IV#Translingual"
        ],
        [
          "Roman numeral",
          "Roman numeral"
        ],
        [
          "four",
          "four"
        ],
        [
          "4",
          "4"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "IIII"
}

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "numeral"
      },
      "expansion": "IIII",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "num",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "the Roman numeral for four (4)",
          "word": "IV"
        }
      ],
      "categories": [
        "Roman numerals",
        "Translingual entries with incorrect language header",
        "Translingual entries with topic categories using raw markup",
        "Translingual lemmas",
        "Translingual numerals",
        "Translingual terms with 3 consecutive instances of the same letter",
        "Translingual terms with 4 consecutive instances of the same letter",
        "mul:Four"
      ],
      "glosses": [
        "Alternative form of IV: the Roman numeral for four (4)."
      ],
      "links": [
        [
          "IV",
          "IV#Translingual"
        ],
        [
          "Roman numeral",
          "Roman numeral"
        ],
        [
          "four",
          "four"
        ],
        [
          "4",
          "4"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "IIII"
}