According To Block
Where Is It?
The According To block is located in the exceptions drawer of the Blawx toolbox.
What Does It Do?
The According To block is used to query whether a given conclusion was reached by a given section of the rules, regardless of whether that conclusion by that section was also overruled.
According to is a statement block, which can be stacked vertically with other statements. Its input connection accepts a section selector or a variable. Right now there is no way in blawx to assign a section value to a variable, so the only variable block that should be used is the "any" variable block.
It also accepts a statements stack, which should be a single statement block representing the conclusion that may or may not have tentatively held.
It is often not necessary to use the "according to" block. If you use "attributed rules", "according to" statements are created automatically for you. And if you query a conclusion, the explanation will indicate which sections of your rules found that conclusion. It is most useful for debugging defaults and exceptions in your code.