It's Programmable... It's configurable...

How much difference is there between a program and a configuration?

Consider that a program is a set of instructions for a universal Turing machine. If a configuration determines how a program does something... if the configuration becomes sophisticated enough so that it even includes a DSL when does it cross the line from merely a configuration into a programming language.

When does a program become configuration? When does a configuration become a program? What is the difference?