Diagrams can be customized in many different ways. The standard practice for Vensim diagrams is to show levels (stocks) as a box, with the name inside the box. Rates are shown with the Rate valve explicitly named, although sometimes a Rate will be unnamed (show only a valve). Auxiliaries, constants, lookups, data (exogenous) variables, etc. are shown as a simple name. This section describes some options for customizing diagrams.
