In our early programming days, we were taught to pass in as parameters everything needed by a function. This was understandable because the alternative was global data, and global data quickly becomes evil. But long parameter lists are often confusing in their own right. If you can obtain one parameter by asking another parameter for it, you can use Replace Parameter with Query (324) to remove the second parameter. Rather than pulling lots of data out of an existing data structure, you can use Preserve Whole Object (319) to pass the original data structure instead.
