What feature allows for the manipulation of an object's dimensions directly?

Direct Editing is the feature that allows users to manipulate an object's dimensions directly within the modeling environment. It facilitates a more intuitive approach to modifying models by enabling designers to click on dimensions or geometry directly in the workspace. This interaction allows for immediate updates to the model without navigating through various menus or dialog boxes, making the design process more efficient and streamlined.

Through Direct Editing, you can adjust dimensions by simply dragging them or entering the desired values, which can be particularly useful for making quick adjustments or fine-tuning a model on the fly. This hands-on method caters to a dynamic design workflow, allowing for instant visual feedback and results.

Other features, while useful in their own contexts, do not offer the same level of direct manipulation. Dimensioning typically refers to the process of adding or managing measurements in a drawing or model, while the Property Browser provides an interface for examining and editing object properties. Smart Dimension, meanwhile, is used to add dimensions to a sketch but does not provide the same direct manipulation capability as Direct Editing does.