Wing has many preferences that control features of the editor, unit tester, debugger, source browser, project manager, and other tools.
To alter these, use the Preferences item in the Edit menu (or Wing IDE menu on OS X). This organizes all available preferences by category and provides access to documentation in tooltips that are displayed when mousing over the label area to the left of each preference. Any non-default values that are selected through the Preferences Dialog are stored in the user's preferences file, which is located in the User Settings Directory.
All preferences are documented in the Preferences Reference.