About Draft Entities in a Drawing
You can add draft entities to a drawing at any time. You can create various geometry types, such as lines, circles, arcs, rectangles, splines, ellipses, points, and chamfers. You can use draft entities in the following ways:
• Use snapping guides that are similar to 3D Sketcher constraints while sketching the geometry. Snapping guides are not converted to permanent constraints.
• Use referencing and geometric constraints as in 3D Sketcher using the Parametric Sketch (available under Legacy Sketch tab).
• Use the construction mode to create construction geometry and you can toggle or convert the types of existing geometry between construction and regular mode.
• Create draft views from draft entities.
• Group separate entities with each other so they move as one.
• Group drafted geometry with a view, so that it scales up or down with the view scale.
Entities read in a drawing from non-Creo drawing formats such as DXF or DWG are considered to be draft entities.
Sketch Tab
The Sketch tab contains modern and user-friendly commands that help you create and modify draft entities and create a draft view from selected draft entities using the Create a Draft View command. Using the sketching commands in the Sketch tab, you can create new entities of solid and construction geometry, such as the following:
Legacy Sketch Tab
The Legacy Sketch tab contains the commands available in Creo Parametric 7.0 and earlier. Using the commands in the Legacy Sketch tab, you can set preferences for some snapping and sketching behaviors in the drawing environment from within the Sketch Preferences dialog box (Click > 
Sketcher Preferences). You can set up common grid, angle and snapping properties for the drawing tools. You can also set sketching preferences, like activating chain sketching or parametric sketching.
Sketcher Preferences). You can set up common grid, angle and snapping properties for the drawing tools. You can also set sketching preferences, like activating chain sketching or parametric sketching.Toggle
Click > to switch between the Sketch and the Legacy Sketch tabs. Switching between the tabs clears all the history of your actions and does not allow you to undo or redo any action you performed before you switched the tab.
 | Use the configuration option dwg_sketch_ribbon to specify the available sketching tools when you work in the Drawing environment. |