In various embodiments, a programmable apparatus for use in a computing environment is provided. The apparatus may include a business rules engine having at least one rule executable by a mainframe system and stored based on an extensible language; and, a business rules engine builder interface configured to access the business rules engine and which permits user selection from among different rules collections in the business rules engine. At least one of the rules in the business engine is associated with modifying an aspect of the business rules engine builder interface itself.