Странный код в теме

В одной моей любимой теме обнаружил на всех страницах в начале тега body следующий код

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Я понимаю, это не вирус, а некая векторная графика. Настолько оправдано ее применение в темах, если она создает такой избыточный код на всех страницах. Поясните?