2D/3DKeyCreator \ Edit \ System-Settings \ 2D-3D
Location: Edit>System Settings>2D/3D
This is a toggle function that allows you to switch between 2D and 3D construction, and select two-dimensional or three-dimensional mode for various geometric modeling functions. Use 2D mode to construct on a 2D plane at the current depth. You can use the Position Menu to select geometry in 3D space while forcing or projecting the creation of entities or positions in 2D space and in the current construction plane and depth. The default setting is 3D.
HINT: After changing this function to 2D mode, reset the switch before using other functions.