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Sticky lines in the editor
To simplify working with large files and exploring new codebases, we’ve introduced sticky lines in the editor. This feature keeps key structural elements, like the beginnings of classes or methods, pinned to the top of the editor as you scroll. This way, scopes always remain in view, and you can promptly navigate through the code by clicking on a pinned line.
As of IntelliJ IDEA 2024.1, this feature will be enabled by default. You can disable it via a checkbox in Settings/Preferences | Editor | General | Appearance, where you can also set the maximum number of pinned lines.