4. An apparatus for outputting a specific layout structure of a specific logical structure based on a given generic logical structure of said specific logical structure, comprising: means for specifying said generic logical structure of said specific logical structure in terms of relational attribute grammars, said relational attributes being specified in terms of binary relationships; means for specifying a generic layout structure for said generic logical structure in terms of relational attribute grammars; means for specifying coordination grammars for said generic logical structure and said generic layout structure and expressing said coordination grammars in terms of relational attribute grammars; means for specifying preference specifications to resolve potential ambiguities in said layout structures; means for determining an optimal specific layout structure for said specific logical structure using said coordination grammars and said preference specifications; and means for generating said specific said logical structure.
4. An apparatus for outputting a specific layout structure of a specific logical structure based on a given generic logical structure of said specific logical structure, comprising: means for specifying said generic logical structure of said specific logical structure in terms of relational attribute grammars, said relational attributes being specified in terms of binary relationships; means for specifying a generic layout structure for said generic logical structure in terms of relational attribute grammars; means for specifying coordination grammars for said generic logical structure and said generic layout structure and expressing said coordination grammars in terms of relational attribute grammars; means for specifying preference specifications to resolve potential ambiguities in said layout structures; means for determining an optimal specific layout structure for said specific logical structure using said coordination grammars and said preference specifications; and means for generating said specific said logical structure. 5. The apparatus of claim 4, wherein said means for determining comprises means for parsing parts of a plurality of specific layout structures based on a context free grammar.