VisiTile-a visual language development toolkit

This paper presents an overview of VisiTile-a toolkit for developing domain-oriented visual languages. The class of visual languages that can be constructed with VisiTile is briefly described, followed by examples of such languages. An overview of the VisiTile architecture is presented, including discussion of the major components and features of the toolkit. The VisiTile toolkit facilitates the specification and implementation of a hybrid class of visual languages that combine data-flow with grammar-based layout. A two-dimensional layout grammar is used to specify legal constructions of data-flow processors. The language specification is used as the basis for syntax-directed editing and interpretation of visual programs.