"-or" meaning in Ido

{
  "etymology_text": "Modeled after -ar and -os.",
  "head_templates": [
    {
      "args": {
        "1": "io",
        "2": "suffix"
      },
      "expansion": "-or",
      "name": "head"
    }
  ],
  "lang": "Ido",
  "lang_code": "io",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ido entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 17 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              15,
              17
            ]
          ],
          "english": "You must buy milk when you are at the shop.",
          "text": "Tu mustas kompror lakto kande tu es che la butiko.",
          "translation": "You must buy milk when you are at the shop.",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to denote the future infinitive of a verb."
      ],
      "id": "en--or-io-suffix-uusEcqsz",
      "links": [
        [
          "infinitive",
          "infinitive"
        ]
      ],
      "related": [
        {
          "english": "present infinitive tense",
          "translation": "present infinitive tense",
          "word": "-ar"
        },
        {
          "english": "past infinitive tense",
          "translation": "past infinitive tense",
          "word": "-ir"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-or"
}

{
  "etymology_text": "Modeled after -ar and -os.",
  "head_templates": [
    {
      "args": {
        "1": "io",
        "2": "suffix"
      },
      "expansion": "-or",
      "name": "head"
    }
  ],
  "lang": "Ido",
  "lang_code": "io",
  "pos": "suffix",
  "related": [
    {
      "english": "present infinitive tense",
      "translation": "present infinitive tense",
      "word": "-ar"
    },
    {
      "english": "past infinitive tense",
      "translation": "past infinitive tense",
      "word": "-ir"
    }
  ],
  "senses": [
    {
      "categories": [
        "Ido entries with incorrect language header",
        "Ido lemmas",
        "Ido suffixes",
        "Ido terms with usage examples",
        "Pages with 17 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              15,
              17
            ]
          ],
          "english": "You must buy milk when you are at the shop.",
          "text": "Tu mustas kompror lakto kande tu es che la butiko.",
          "translation": "You must buy milk when you are at the shop.",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to denote the future infinitive of a verb."
      ],
      "links": [
        [
          "infinitive",
          "infinitive"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-or"
}