How do I get the editor part to fill the whole page and not be centered in the middle

Scrivener Scrivener for Windows
1

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Not full screen by the way, so that the editor edges touch the Inspector, and the other bars on the screen, not the one where it goes into composition mode.

2

In the 3.0 beta, Scrivener’s default settings have enabled a fixed width for the editor to avoid overly long, difficult-to-read lines of text in the editor on wider screens. You can adjust the width or turn the feature off in the Appearance tab of File > Options…; you’ll find it under Main Editor.

3

Thank you! that worked perfect. I love this program, and I love how responsive you guys are to answering questions. Definitely don’t regret buying it. Thank you very much for your awesome product and customer service.