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

<!ATTLIST IsaExport file CDATA #REQUIRED>

<!ELEMENT Imports (Import*)>

<!ELEMENT Import EMPTY>

<!ATTLIST Import name CDATA #REQUIRED>

<!ELEMENT Consts (ConstDecl*)>

<!ELEMENT ConstDecl ((TVar|TFree|Type),(Term|NoTerm))>

<!ATTLIST ConstDecl name CDATA #REQUIRED>

<!ELEMENT Axioms (Term*)>

<!ELEMENT Theorems (Term*)>

<!ELEMENT Types (TypeDecl*)>

<!ELEMENT Classes (ClassDecl*)>

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

<!ATTLIST Term name CDATA #REQUIRED>

<!ELEMENT TypeDecl (RecType*)>

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<!ELEMENT RecType (Vars,Constructors)>

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<!ATTLIST RecType altname CDATA #IMPLIED>

<!ELEMENT Vars (DtTFree|DtType|DtRec)*>

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<!ELEMENT DtType (DtTFree|DtType|DtRec)*>

<!ATTLIST DtType s CDATA #REQUIRED>

<!ELEMENT DtRec EMPTY>

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<!ELEMENT Constructors (Constructor*)>

<!ELEMENT Constructor (DtTFree|DtType|DtRec)*>

<!ATTLIST Constructor val CDATA #REQUIRED>

<!ELEMENT ClassDecl (Axiom|Param|Parent)*>

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

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

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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>

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

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<!ELEMENT TVar (class*)>

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<!ATTLIST TVar index CDATA #IMPLIED>

<!ELEMENT TFree (class*)>

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

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<!ELEMENT class EMPTY>

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