What is the Overprint function and when should it be used?

If you are using graphic editors, kindly use the Overprint function with caution. Incorrect use can produce unwanted results. When two objects of different colors overlap, they knockout and they will not print on top of each other. To intentionally print one layer of ink on top of another is to overprint. This can be useful to terminate gaps between touching colors, for instance if a black object is printed on top of a magenta object. Kindly becareful when using this function. MorningPrint cannot compensate for the misuse of the "overprint" function.