---
title: Core
description: The foundational file-level settings: indentation style and size, line endings, character encoding, final-newline and trailing-whitespace handling, and...
url: https://docs-v3-preview.elastic.dev/reference/core
---

# Core
The foundational file-level settings: indentation style and size, line endings, character encoding, final-newline and trailing-whitespace handling, and `max_line_length` — the column target that determines whether Curb reflows long lines or runs in preservation mode.
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