In a generate and test algorithm, COMbining part of the filter with the generator in order to reduce the number of potential solutions generated. A trivial example: filter (< 100) [1..1000] ==> [1..99] where [1..n] generates the list of integers from 1 to n. Here the filter has been COMbined COMpletely with the generator. This is an example of fusion. (2005-03-18)