In the rule “Probulator Operation”, replace the text “a forecast value output (which is generally the next output that the Function should return if used (though may not be, as the actual output is determined by the method))” with “a default forecast value output”

In the rule “Probulator Operation”, immediately following the text “a list of Functions (which must consist only of names of Functions as detailed in subrules to this rule, and which must include at least one such Function)” add “, a forecast value output for each of those functions (which is generally the next output that the Function should return if used (though may not be, as the actual output is determined by the method))”

Set all newly created forecast value outputs to the forecast value output that their functions were holding immediately before enactment.