Use rules only on selected dictionaries

[xkwas]

Here is the following scenario: There are multiple dictionaries (straight mode), but I want to apply rules.rule only to the last one (numbers.txt), therefore I save a lot of time and computing power.
Dictionaries:
D:\animals.txt
D:\names.txt
D:\words.txt
D:\numbers.txt <= Can rules.rule apply only to that dictionary?
Thanks