noun
diamond cursor
A cursor shaped like a diamond, used in some graphical user interfaces or text editors.
このエディタでは、ダイヤモンドカーソルを使ってテキストを選択できます。
In this editor, you can select text using the diamond cursor.
Variant with interpunct; less common in running text.
カーソル is the general term for any on-screen cursor; ダイヤモンドカーソル specifically refers to a diamond-shaped variant.
Borrowed from English 'diamond cursor', referring to a cursor shaped like a diamond.