Abstract:The theory of visual programming languages (VPLs) is very crucial for understanding the visual programming approach. It includes basically formal models for specifying VPLs and the corresponding parsing algorithms. This paper presents a grammatical formalism and an ecient parsing algorithm for visual languages. The proposed formalism, called modi®ed relation grammar (MRG), is a restricted form of the relation grammar (RG). MRG restricts the form of productions and distributes the evaluation rules among various… Show more
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