Hello!

I am interested in the design choices surrounding SRFI-39: the

make-parameter function and parameterize special form. There are

specifically 2 issues that I don't understand.

1) The parameter is currently a function that yields the value its

holding when it is called. What is the purpose of forcing the user to

"dereference" the parameter in this way? This is constrast to

implementing dynamic variables using a mutable global variable, and

having parameterize directly mutate the global variable within a

dynamic-wind context.

2) Is there a way to get a closure to close over the dynamic

environment? The use case is that I want to use dynamic variables

*purely* to avoid having to pass commonly used arguments

explicitly. Thus I am using the dynamic variable as an "implicitly"

passed argument. And in such a case, I would like closures to refer to

the value of the dynamic variable at the time of closure creation. 

Thank you very much!

  -Patrick