アノテーションの追加、削除、および取得

**PDFドキュメントの注釈とは何ですか？**

これらは、テキストの内容を拡張し、編集や他のユーザーへのコメントを加えるためにファイルに追加する追加のオブジェクトです。また、ドキュメントのテキストをより読みやすくすることも可能で、それを強調表示したり、下線を引いたり、完全に新しいテキストを追加することもできます。

Aspose.PDF for .NETライブラリで利用可能な注釈の異なる種類をグループにまとめました：

- [PDF テキスト注釈](/pdf/ja/net/text-annotation/)
- [PDF ハイライト注釈](/pdf/ja/net/highlights-annotation/)
- [PDF 図形注釈](/pdf/ja/net/figures-annotation/)
- [マルチメディア注釈](/pdf/ja/net/multimedia-annotation/)
- [PDF スティッキー注釈](/pdf/ja/net/sticky-annotations/)
- [リンク注釈](/pdf/ja/net/link-annotations/)
- [追加注釈](/pdf/ja/net/extra-annotations/)

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