Change Appearance preferences in CotEditor

In the CotEditor app on your Mac, use Appearance preferences to choose the appearance of documents, such as font, line height, and colors. To change these preferences, choose CotEditor > Preferences, then click Appearance.

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Option	Description
Font	The font and font size for the editor. To change the font or font size, click Select, then choose a different font or font size.
Anti-aliasing	Display text in the editor anti-aliased. Anti-aliasing is a rendering feature that smoothes jagged edges.
Ligatures	Apply the standard ligature rules to the editor’s text, or turn off all ligatures. A ligature is a typographic feature joining specific characters as a single glyph.
Line height	Line height with a value indicating the number of lines. The range must be from 0.1 to 10.0.
Change background color	Highlight the lines in which cursors exist with another background color. The Current Line color in the selected theme will be used for this highlight.
Cursor	The style of the cursor in the editor.
Show invisible characters	Transform invisible characters — such as line endings, whitespaces, or control characters — into alternative symbols to make them viewable. See Display invisible characters for about the available types of invisible characters.
Show indent guides	Draw guides for each indent width in the indent parts of the document.
Appearance	Choose the document window appearance regardless of the system appearance state.
Theme	Choose your default coloring theme for the editor, and manage the themes. See About theme for about theme customization.
Theme list	Choose your default theme for the text view.
Add +, Remove -	Create a new theme or remove the selected theme. The themes bundled with CotEditor can not be removed.
Other Actions (gear)	Duplicate Duplicate the selected theme to make your own one. Restore Restore the selected theme to default. This command is available only for bundled themes. Export Export the theme file made from the selected theme. With exported files, custom coloring themes can be used on another computer. To use the exported file, do Import. Share Share the theme file made from the selected theme. Import This allows you to use a theme created on another computer. After selecting Import, choose the theme file to import.
Theme editor	Edit the selected theme. Click the color wells to choose colors. Basic Basic text coloring other than syntax highlighting. If the “Use system color” checkbox for the “Selection” is turned on, the setting in System Preferences > General > Highlight Color is used for the selection highlighting. Syntax The text colors for syntax highlighting.

See also