<!ELEMENT IsaExport (Imports, Consts, Axioms, Theorems, Types, Classes)>

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<!ELEMENT Imports (Import*)>

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<!ELEMENT Consts (ConstDecl*)>

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<!ELEMENT Axioms (Term*)>

<!ELEMENT Theorems (Term*)>

<!ELEMENT Types (TypeDecl*)>

<!ELEMENT Classes (ClassDecl*)>

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<!ELEMENT Term (Bound|Free|Var|Const|App|Abs)>

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<!ELEMENT Constructors (Constructor*)>

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<!ATTLIST Var index CDATA #IMPLIED>

<!ELEMENT Const (TVar|TFree|Type)>

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<!ATTLIST Const infix CDATA #IMPLIED>

<!ATTLIST Const infixl CDATA #IMPLIED>

<!ATTLIST Const infixr CDATA #IMPLIED>

<!ATTLIST Const mixfix_i CDATA #IMPLIED>

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<!ELEMENT Type (TVar|TFree|Type)*>

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<!ELEMENT class EMPTY>

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