Reverse knot and reflection

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I have read about, assuming we are given a Knot $K$, the reverse knot of $K$ and the reflection of $K$.

Can somebody please tell me, what these knots are? Maybe through an example?

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The reverse of an oriented knot is the knot with the opposite orientation. The reflection of a knot diagram is the same diagram with all the crossings switched; undercrossings to overcrossings and overcrossings to undercrossings. See Lickorish's book "An introduction to knot Theory" page 4.