# Appearance preferences

Use the Appearance panel of the Preferences window to customize the appearance of C elements in the viewers. Click Window > Preferences > C/C++ > Appearance to open.

Appearance Options
Option | Description
--- | ---
Show translation unit members | Select this option to show translation unit members in the Project Explorer and C/C++ Projects views.
Group include directives in Project Explorer and C/C++ Projects view | Select this option to group include directives in the Project Explorer and C/C++ Projects views.
Group include directives in the Outline view | Select this option to group include directives in the Outline view.
Group namespaces in the Outline view | Select this option to group namespace declarations in the Outline view.
Group method definitions in the Outline view | Select this option to group method definitions for the same type in the Outline view.
Group macro definitions in the Project Explorer and C/C++ Project views. | Select this option to group method definitions for the same type in the Project Explorer and C/C++ Project views.
Group macro definitions in the Outline view. | Select this option to group macro definitions in the Outline view.
Sort header files before source files in Project Explorer and C/C++ Projects view | Select this option to separate header and source files in the Project Explorer and C/C++ Projects views.
Show source roots at top of project | Select this option to group source roots at the top of project views.