1. A system that simplifies the creation of user-defined custom elements for use in a graphical modeling application comprising: a graphical modeling application configured to graphically facilitate a creation of a semantic model utilizing a plurality of static graphical elements and a plurality of semantic data elements; and a custom element definition tool configured to facilitate a creation of a user-defined custom element within the graphical modeling application, wherein the user-defined custom element comprises at least one of at least one static graphical element and at least one semantic data element.