"non-printing character" meaning in English

{
  "forms": [
    {
      "form": "non-printing characters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "non-printing character (plural non-printing characters)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "NPC"
        }
      ],
      "examples": [
        {
          "ref": "1960, Calvin N. Mooers, “The Use of Non-Printing Characters for Format Indication on Abstracts Transcribed on Machine Media”, in The \"Tape Typewriter Plan\": A Method for Cooperation in Documentation, Air Force Office of Scientific Research, page 19:",
          "text": "It is my proposal that a \"non-printing character\" be placed in the typewriter keyboard and in the tape code. This non-printing character will be recognised only by the computing machine. When this character is struck on the keyboard, no printing occurs, but the tape is punched with the tape code for the non-printing character (NPC).",
          "type": "quote"
        },
        {
          "ref": "1989, Tillman J. Ragan, Patricia L. Smith, Programming Instructional Software, Educational Technology Publications, →ISBN, page 372:",
          "text": "When CONTROL is pressed at the same time as another key, a non-printing character is created. In other words, you do not see a letter displayed on the screen.",
          "type": "quote"
        },
        {
          "ref": "2012, S. Eisenbach, C. Sadler, PASCAL for Programmers, Springer Berlin Heidelberg, →ISBN, page 189:",
          "text": "Control Character -- Non-printing character used to format input or output on a VDU or printer, such as CR, rubout etc.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of control character."
      ],
      "id": "en-non-printing_character-en-noun-dWN3zDGm",
      "links": [
        [
          "control character",
          "control character#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "control character"
        }
      ]
    }
  ],
  "word": "non-printing character"
}

{
  "derived": [
    {
      "word": "NPC"
    }
  ],
  "forms": [
    {
      "form": "non-printing characters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "non-printing character (plural non-printing characters)",
      "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",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1960, Calvin N. Mooers, “The Use of Non-Printing Characters for Format Indication on Abstracts Transcribed on Machine Media”, in The \"Tape Typewriter Plan\": A Method for Cooperation in Documentation, Air Force Office of Scientific Research, page 19:",
          "text": "It is my proposal that a \"non-printing character\" be placed in the typewriter keyboard and in the tape code. This non-printing character will be recognised only by the computing machine. When this character is struck on the keyboard, no printing occurs, but the tape is punched with the tape code for the non-printing character (NPC).",
          "type": "quote"
        },
        {
          "ref": "1989, Tillman J. Ragan, Patricia L. Smith, Programming Instructional Software, Educational Technology Publications, →ISBN, page 372:",
          "text": "When CONTROL is pressed at the same time as another key, a non-printing character is created. In other words, you do not see a letter displayed on the screen.",
          "type": "quote"
        },
        {
          "ref": "2012, S. Eisenbach, C. Sadler, PASCAL for Programmers, Springer Berlin Heidelberg, →ISBN, page 189:",
          "text": "Control Character -- Non-printing character used to format input or output on a VDU or printer, such as CR, rubout etc.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of control character."
      ],
      "links": [
        [
          "control character",
          "control character#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "control character"
        }
      ]
    }
  ],
  "word": "non-printing character"
}