Generating a dynamic legend for a drawing developed by a diagramming software program. A drawing sheet module and legend module, logically-coupled to the drawing sheet module, are useful for generating and updating a dynamic legend. The legend module can support the addition of a legend to a drawing sheet. The legend module can also determine if legend symbols should be automatically added to the legend. If legend symbols are added to a drawing sheet, that addition can be automatically reflected in the dynamic legend. Symbols can be converted such that they may be reflected in a dynamic legend.