1. A system comprising: a processor configured to initiate executable operations comprising: generating a pictorial diagram specifying a rule within a development environment, wherein the pictorial diagram comprises a first subject element specifying criteria for selecting artifacts within the development environment; enabling the pictorial diagram within the development environment; and responsive to an execution event, executing the pictorial diagram by selecting each artifact matching the criteria of the first subject element and performing the rule specified by the pictorial diagram upon each selected artifact within the development environment.