English: The red arrows indicate which way force is being applied to the ratchet gear (green). The gear only moves when force is applied counterclockwise. The pawl (pink) prevents the gear from rotating clockwise.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.