Review key terms specific to the sketching process.
For example, a sketch-based roof is selected in the following image.
In this example, when you select the roof (created by extrusion), you can click Modify | Roofs tabMode panel (Edit Profile), which opens the sketch (the pink lines in the following image) in sketch mode. For a roof created by footprint, select the roof and click Modify | Roofs tabMode panel (Edit Footprint). Here you can edit the individual elements of the sketch. The tools that are available in sketch mode vary depending on the type of element you are editing.