Modular documents are the reference documents for the Probable Cause, Possible Solution, and Corrective Actions statements. Every Probable Cause, Possible Solution, and Corrective Action statement has a corresponding Modular document. When you create a Server and Addin Task Event document, the Probable Cause, Possible Solution, and Corrective Action statements that you choose to include in the document are referenced from Modular documents. The benefit of using Modular documents is that you only need to define these statements once, and you can then use them multiple times for any number of events. If you modify a Probable Cause, Possible Solution, or Corrective Action statement in a Modular document, that is a global modification because the information is applied to every Server and Addin Task document that references that modified statement.
All of the Lotus generated Probable Cause, Possible Solution, and Corrective Actions documents that ship with Domino are enabled by default.