Where can you specify default root marks in electrical design software?

In electrical design software, default root marks can be specified in the symbol properties or manufacturer's part properties. This is important because root marks are essential for identifying reference designators for components in a schematic. By setting default root marks within these properties, users can streamline the assignment of reference designators for symbols, ensuring consistency and ease of use across the design.

When this is configured in the symbol properties, any instance where that symbol is used in a project will automatically apply the default root mark, making it easier to manage and update documentation as the project evolves. Similarly, manufacturer's part properties provide detailed information directly linked to components, enhancing the overall efficiency in assigning and managing reference designators.

Options related to component managers, library resources, or project settings typically do not provide the same level of direct customization for root marks as the symbol and manufacturer's part properties do, which is why this answer stands out as the most fitting choice for the question.