"-ajx-" meaning in Espéranto

{
  "categories": [
    {
      "kind": "other",
      "name": "Variantes par contrainte typographique en espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Espéranto",
      "orig": "espéranto",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Espéranto",
  "lang_code": "eo",
  "pos": "typographic variant",
  "pos_title": "Variante par contrainte typographique",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Variantes du système x en espéranto",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Orthographe par contrainte typographique par système x de -aĵ-."
      ],
      "id": "fr--ajx--eo-typographic variant-bAIG9rKr"
    }
  ],
  "sounds": [
    {
      "ipa": "\\aʒ\\"
    }
  ],
  "tags": [
    "alt-of"
  ],
  "word": "-ajx-"
}

{
  "categories": [
    "Variantes par contrainte typographique en espéranto",
    "espéranto"
  ],
  "lang": "Espéranto",
  "lang_code": "eo",
  "pos": "typographic variant",
  "pos_title": "Variante par contrainte typographique",
  "senses": [
    {
      "categories": [
        "Variantes du système x en espéranto"
      ],
      "glosses": [
        "Orthographe par contrainte typographique par système x de -aĵ-."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\aʒ\\"
    }
  ],
  "tags": [
    "alt-of"
  ],
  "word": "-ajx-"
}