Sometimes you might need to go back and make changes.
To change tools or cutting methods/data for an operation block, tap the operation block tab below the 3D model to open the operation block panel. Make your changes and tap “Save and continue” to finish. Note that this only works for the last operation block.
To delete an operation block, press and hold the operation block tab. A red cross will appear; tap it to delete. Note that you should only delete the last operation block in the sequence, to avoid invalid programs caused by interdependent operation blocks.
To delete a setup, tap the ellipsis (“...”) on the setup tab and select “Delete setup”.