This package provides an implementation of the ideas presented in the paper "Functional Pearl: Implicit Configurations" by Oleg Kiselyov and Chung-chieh Shan. However, the API has been streamlined to improve performance. The original paper can be obtained from http://www.cs.rutgers.edu/~ccshan/prepose/prepose.pdf. For a summary of the approach taken by this library, along with more motivating examples, see Austin Seipp's tutorial at https://www.fpcomplete.com/user/thoughtpolice/using-reflection.