What action is performed to unlock the plane for sketching?

To unlock the plane for sketching in Solid Edge, using the escape key is a common action that allows you to exit any current command or selection mode and return to a standby state, which can also affect the locking status of the active plane. This action typically resets the context, allowing you to make new selections, including the ability to unlock or activate the plane for sketching.

In addition, when working with planes in Solid Edge, it's important to understand how different actions interact with the user interface. While other options may perform other functions, pressing the escape key specifically aids in releasing any active selection, preparing you to proceed with unlocking the plane as needed.