1) Open a Reality Data in the Reality Data Web Viewer.
2) Click the Cog icon in the Reality Data Web Viewer’s upper-right corner and select the “Settings” option.

General Section
- Theme: Choose between a Light and Dark theme for the Reality Data Web Viewer.

- Unit System: Display units for measurement tools in the Reality Data Web Viewer.

- Navigation: Use the standard iTwin or OpenCities Planner actions to navigate in your model.


Note: It is possible to force the OpenCities Planner navigation by appending the following string at the end of the Reality data Web Viewer's URL: &ocp-navigation=true
- Startup: Pre-load global data sources at startup.

Memory Section
- GPU Memory Limit: Control amount of graphics memory used by the Reality Data Web Viewer.

Annotations Section
- Create, modify and delete annotation groups in your organization.

4D Navigation Section
- Two Navigation types are available (Default is “Per View”).

- Global: A single timeline component is displayed at the bottom of the Reality Data Web Viewer. This navigation type is useful when using 4D Navigation in conjunction with the Orbit Photo Navigation for visualizing a Reality Mesh/Point Cloud and a Mapping Resource that were acquired at the same time in two different viewports.
- Per View: One timeline component is displayed at the bottom of all viewports in the Reality Data Web Viewer. This navigation type is useful when needing to visualize Reality Data that were acquired at different times in two different viewports.
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Note:
- Preferences are saved per user and persisted between sessions.