テキスト開かい始しMeanings1nounstart of text; STXcomputingComputing term for the beginning of a text segment or the STX control character.通つう信しんプロトコルでは、テキスト開かい始しを示しめす制せい御ぎょ文も字じが使つかわれる。In communication protocols, a control character indicating the start of text is used.