Which command lets you substitute bodies and datums as well as reapply dependent features?

The command that allows for substituting bodies and datums while reapplying dependent features is the Replace Feature command. This functionality is particularly useful in complex modeling scenarios where you might need to change a component or datum within an assembly or part without losing the integrity of the dependent features that rely on the original geometry.

When utilizing the Replace Feature command, the original feature can be replaced with a new one, and the software ensures that any features that depend on the original feature are automatically updated to reference the new feature. This is critical in maintaining design intent and ensuring that modifications do not lead to errors or inconsistencies in the model.

The process streamlines design modifications, particularly in parametric environments like Siemens NX, where changes need to reflect throughout the model efficiently. In contrast, the other commands mentioned (such as Reorder Feature, Copy/Paste, and Feature Group) serve different purposes that do not include the automatic update of dependent features or substitution capabilities that are fundamental to the Replace Feature command.