NEdit-ng can be customized in many different ways. The most important user-settable options are presented in the Preferences menu, including all options that users might need to change during an editing session. Options set in Preferences → Default Settings can be preserved between sessions by selecting Preferences → Save Defaults, which writes the changes to the preferences file. See Preferences for more details.

User defined commands can be added to NEdit-ng's Shell, Macro, and window background menus. Dialogs for creating items in these menus can be found under Preferences → Default Settings → Customize Menus.

For users who depend on NEdit-ng every day and want to tune every excruciating detail, there are also configuration settings for tuning a vast number of such details, down to the color of each individual button. See Config Entries for more information, as well as a list of selected settings.

The most common reason for customizing your Config Entries for NEdit-ng, however, is key binding. While limited key binding can be done through Preferences → Default Settings → Customize Menus, you can really only add keys this way, and each key must have a corresponding menu item. Any significant changes to key binding should be made via the Translations resource and menu accelerator resources. Key Binding and Config Entries have more information.