in rule 2.3.2 “Variables” change the following:

*Name: The name by which the Variable is refered (and any abbreviations by which it may be refered).
*Creator: The name of the Worker(s) considered responsible for adding the Variable to the Machine.
*Possible States: A description of the possible states the variable may be in.  If appropriate, a description of the order in which the variable advances may be included.
*State: The current State of the Variable (which must always be one of the possible states described in the previous bullet-point).

to:

*Name: The name by which the Variable is refered (and any abbreviations by which it may be refered).
*Creator: The name of the Worker(s) considered responsible for adding the Variable to the Machine.
*Possible States: A description of the possible states the variable may be in.  If appropriate, a description of the order in which the variable advances may be included.
*State: The current State of the Variable (which must always be one of the possible states described in the previous bullet-point).
*Default State: A Constant which is the same as the State of the Variable when it is first added to the Machine.

This gives us the option of reseting the entire machine, or pieces of the machine by using their Default States.