ditto

IPA(Pronunciation)

/ˈdɪtəʊ/

Noun

US informal broadly historical in-plural

That which was stated before, the aforesaid, the above, the same, likewise. / (US, informal) A duplicate or copy of a document, particularly one created by a spirit duplicator.

Japanese Meaning

前述の内容、上述のもの / 同一のもの、同様なもの / （米国の非公式な用法）文書の複写、コピー

What is this buttons?

On the second line he simply wrote ditto to refer to the item listed above.

Google Translation / DeepL Translation

2行目に彼は上に記載された項目を指すために単に「同上」と書いた。

Details

Sense（1）

That which was stated before, the aforesaid, the above, the same, likewise.

… they entered a dismal-looking parlour, whose brick-red walls and ditto curtains were scantily lighted by a single lamp, though it was of the last new patent—[…]

Google Translation / DeepL Translation