0024830: Remove redundant keyword 'mutable' in CDL declarations

Redundant keyword 'mutable' removed in CDL files.
In IGESConvGeom_GeomBuilder, unused methods MakeXY() and MakeXYZ() removed.
Method StepAP214_AutoDesignGroupAssignment::Init() replicating same method of the base class is removed as it causes CDL extraction error after above (seemingly irrelevant) changes.

src/Expr/Expr_Absolute.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the Abs of <exp>
-    returns mutable Absolute;
+    returns Absolute;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_ArcCosine.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the Arccos of <exp>
-    returns mutable ArcCosine;
+    returns ArcCosine;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_ArcSine.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the Arcsin of <exp>
-    returns mutable ArcSine;
+    returns ArcSine;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_ArcTangent.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the Arctan of <exp>.
-    returns mutable ArcTangent;
+    returns ArcTangent;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_ArgCosh.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the ArgCosh of <exp>
-    returns mutable ArgCosh;
+    returns ArgCosh;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_ArgSinh.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the ArgSinh of <exp>.
-    returns mutable ArgSinh;
+    returns ArgSinh;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_ArgTanh.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the Argtanh of <exp>.
-    returns mutable ArgTanh;
+    returns ArgTanh;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_BinaryFunction.cdl

@@ -37,7 +37,7 @@ is
     Create(func : GeneralFunction; exp1,exp2 : GeneralExpression)
     ---Purpose: Creates <me> as <func> (<exp1>,<exp2>).
     --          Raises exception if <func> is not binary.
-    returns mutable BinaryFunction
+    returns BinaryFunction
     raises InvalidFunction;
 
     Function(me)
@@ -52,7 +52,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Cosh.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the Cosh of <exp>
-    returns mutable Cosh;
+    returns Cosh;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Cosine.cdl

@@ -31,7 +31,7 @@ is
 
     Create(Exp : GeneralExpression)
     ---Purpose: Creates the cosine of Exp
-    returns mutable Cosine;
+    returns Cosine;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Difference.cdl

@@ -32,7 +32,7 @@ is
 
     Create(exp1,exp2 : GeneralExpression)
     ---Purpose: Creates the difference <exp1> - <exp2>.
-    returns mutable Difference;
+    returns Difference;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -42,7 +42,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Different.cdl

@@ -28,7 +28,7 @@ is
 
     Create(exp1 : GeneralExpression ; exp2 : GeneralExpression)
     ---Purpose: Creates the relation <exp1> # <exp2>.
-    returns mutable Different;
+    returns Different;
 
     IsSatisfied(me)
     returns Boolean;
@@ -37,7 +37,7 @@ is
     ---Purpose: Returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -48,7 +48,7 @@ is
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and 
     --          functions. 
-    returns mutable like me;
+    returns like me;
     
     String(me)
     ---Purpose: returns a string representing <me> in a readable way.

src/Expr/Expr_Division.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp1,exp2 : GeneralExpression)
     ---Purpose: Creates the division <exp1>/<exp2>
-    returns mutable Division;
+    returns Division;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Equal.cdl

@@ -28,7 +28,7 @@ is
 
     Create(exp1 : GeneralExpression ; exp2 : GeneralExpression)
     ---Purpose: Creates the relation <exp1> = <exp2>.
-    returns mutable Equal;
+    returns Equal;
 
     IsSatisfied(me)
     returns Boolean;
@@ -37,7 +37,7 @@ is
     ---Purpose: returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -47,7 +47,7 @@ is
     
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     String(me)
     ---Purpose: returns a string representing <me> in a readable way.

src/Expr/Expr_Exponential.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the exponential of <exp>
-    returns mutable Exponential;
+    returns Exponential;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Exponentiate.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp1,exp2 : GeneralExpression)
     ---Purpose: Creates the exponential <exp1> ^ <exp2>
-    returns mutable Exponentiate;
+    returns Exponentiate;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_FunctionDerivative.cdl

@@ -36,7 +36,7 @@ is
     --          to the <withX> variable.
     --          Raises OutOfRange if <deg> lower or equal to zero.
     ---Level : Advanced
-    returns mutable FunctionDerivative
+    returns FunctionDerivative
     raises OutOfRange;
 
     NbOfVariables(me)
@@ -60,7 +60,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> with the same form.
-    returns mutable like me;
+    returns like me;
 
     Derivative(me; var : NamedUnknown)
     ---Purpose: Returns Derivative of <me> for variable <var>.

src/Expr/Expr_GeneralExpression.cdl

@@ -69,7 +69,7 @@ is
     ---Purpose: Returns a copy of <me> having the same unknowns and 
     --          functions. 
     ---Level: Advanced 
-    returns mutable like me
+    returns like me
     is deferred;
     
     ContainsUnknowns(me) 

src/Expr/Expr_GeneralFunction.cdl

@@ -51,7 +51,7 @@ is
     Copy(me)
     ---Purpose: Returns a copy of <me> with the same form.
     ---Level: Advanced 
-    returns mutable like me
+    returns like me
     is deferred;
     
     Derivative(me; var : NamedUnknown)

src/Expr/Expr_GeneralRelation.cdl

@@ -48,7 +48,7 @@ is
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
     ---Level: Advanced 
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError
     is deferred;
 
@@ -63,7 +63,7 @@ is
     ---Purpose: Returns a copy of <me> having the same unknowns and 
     --          functions.
     ---Level: Advanced 
-    returns mutable like me
+    returns like me
     is deferred;
     
     NbOfSubRelations(me)

src/Expr/Expr_GreaterThan.cdl

@@ -28,7 +28,7 @@ is
 
     Create(exp1 : GeneralExpression ; exp2 : GeneralExpression)
     ---Purpose: Creates the relation <exp1> > <exp2>.
-    returns mutable GreaterThan;
+    returns GreaterThan;
 
     IsSatisfied(me)
     returns Boolean;
@@ -37,7 +37,7 @@ is
     ---Purpose: Returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -47,7 +47,7 @@ is
     
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     String(me)
     ---Purpose: returns a string representing <me> in a readable way.

src/Expr/Expr_GreaterThanOrEqual.cdl

@@ -28,7 +28,7 @@ is
 
     Create(exp1 : GeneralExpression ; exp2 : GeneralExpression)
     ---Purpose: Creates the relation <exp1> >= <exp2>.
-    returns mutable GreaterThanOrEqual;
+    returns GreaterThanOrEqual;
 
     IsSatisfied(me)
     returns Boolean;
@@ -37,7 +37,7 @@ is
     ---Purpose: Returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -47,7 +47,7 @@ is
     
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     String(me)
     ---Purpose: returns a string representing <me> in a readable way.

src/Expr/Expr_LessThan.cdl

@@ -28,7 +28,7 @@ is
 
     Create(exp1 : GeneralExpression ; exp2 : GeneralExpression)
     ---Purpose: Creates the relation <exp1> < <exp2>.
-    returns mutable LessThan;
+    returns LessThan;
 
     IsSatisfied(me)
     returns Boolean;
@@ -37,7 +37,7 @@ is
     ---Purpose: Returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -47,7 +47,7 @@ is
     
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     String(me)
     ---Purpose: returns a string representing <me> in a readable way.

src/Expr/Expr_LessThanOrEqual.cdl

@@ -28,7 +28,7 @@ is
 
     Create(exp1 : GeneralExpression ; exp2 : GeneralExpression)
     ---Purpose: Creates the relation <exp1> <= <exp2>.
-    returns mutable LessThanOrEqual;
+    returns LessThanOrEqual;
 
     IsSatisfied(me)
     returns Boolean;
@@ -37,7 +37,7 @@ is
     ---Purpose: Returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -47,7 +47,7 @@ is
     
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     String(me)
     ---Purpose: returns a string representing <me> in a readable way.

src/Expr/Expr_LogOf10.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the base 10 logarithm of <exp>
-    returns mutable LogOf10;
+    returns LogOf10;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_LogOfe.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the natural logarithm of <exp>
-    returns mutable LogOfe;
+    returns LogOfe;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_NamedConstant.cdl

@@ -33,7 +33,7 @@ is
 
     Create(name : AsciiString; value : Real)
     ---Purpose: Creates a constant value of name <name> and value <value>.
-    returns mutable NamedConstant;
+    returns NamedConstant;
 
     GetValue(me)
     ---C++: inline
@@ -67,7 +67,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     ContainsUnknowns(me) 
     ---Purpose: Tests if <me> contains NamedUnknown.

src/Expr/Expr_NamedFunction.cdl

@@ -40,7 +40,7 @@ is
     --          <name> defined by the expression <exp>.
     ---Level : Advanced
     
-    returns mutable NamedFunction;
+    returns NamedFunction;
 
     SetName(me : mutable; newname : AsciiString)
     ---Purpose: Sets the name <newname> to <me>.
@@ -76,7 +76,7 @@ is
 		 
     Copy(me)
     ---Purpose: Returns a copy of <me> with the same form.
-    returns mutable like me;
+    returns like me;
 
     Derivative(me; var : NamedUnknown)
     ---Purpose: Returns Derivative of <me> for variable <var>.

src/Expr/Expr_NamedUnknown.cdl

@@ -36,7 +36,7 @@ raises NotAssigned from Expr,
 is
 
     Create(name : AsciiString)
-    returns mutable NamedUnknown;
+    returns NamedUnknown;
 
     IsAssigned(me)
     ---Purpose: Tests if an expression is assigned to <me>.
@@ -94,7 +94,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     ContainsUnknowns(me) 
     ---Purpose: Tests if <me> contains NamedUnknown.

src/Expr/Expr_NumericValue.cdl

@@ -33,7 +33,7 @@ is
 
     Create(val : Real)
     ---Level: Advanced
-    returns mutable NumericValue;
+    returns NumericValue;
 
     GetValue(me)
     ---Level: Advanced
@@ -69,7 +69,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     ContainsUnknowns(me) 
     ---Purpose: Tests if <me> contains NamedUnknown.

src/Expr/Expr_PolyFunction.cdl

@@ -37,7 +37,7 @@ is
 
     Create(func : GeneralFunction;exps : Array1OfGeneralExpression)
     ---Purpose: Creates <me> as <func>(<exps_1>,<exps_2>,...,<exps_n>)
-    returns mutable PolyFunction;
+    returns PolyFunction;
 
     Function(me)
     ---Purpose: Returns the function defining <me>.
@@ -51,7 +51,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Product.cdl

@@ -32,11 +32,11 @@ is
 
     Create(exps : SequenceOfGeneralExpression)
     ---Purpose: Creates the product of all members of sequence <exps>
-    returns mutable Product;
+    returns Product;
 
     Create(exp1,exp2 : GeneralExpression)
     ---Purpose: Creates the product of <exp1> and <exp2>.
-    returns mutable Product;
+    returns Product;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -46,7 +46,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Sign.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the sign of <exp>.
-    returns mutable Sign;
+    returns Sign;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Sine.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the sine of <exp>.
-    returns mutable Sine;
+    returns Sine;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Sinh.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the sinh of <exp>.
-    returns mutable Sinh;
+    returns Sinh;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Square.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the square of <exp>.
-    returns mutable Square;
+    returns Square;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_SquareRoot.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the square root of <exp>
-    returns mutable SquareRoot;
+    returns SquareRoot;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Sum.cdl

@@ -33,11 +33,11 @@ is
 
     Create(exps : SequenceOfGeneralExpression)
     ---Purpose: Creates the sum of all the members of sequence <exps>.
-    returns mutable Sum;
+    returns Sum;
 
     Create(exp1,exp2 : GeneralExpression)
     ---Purpose: Creates the sum of <exp1> and <exp2>.
-    returns mutable Sum;
+    returns Sum;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -47,7 +47,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_SystemRelation.cdl

@@ -30,7 +30,7 @@ is
     Create(relation : GeneralRelation)
     ---Purpose: Creates a system with one relation
     ---Level : Advanced
-    returns mutable SystemRelation;
+    returns SystemRelation;
 
     Add(me : mutable; relation : GeneralRelation)
     ---Purpose: Appends <relation> in the list of components of <me>. 
@@ -72,7 +72,7 @@ is
     ---Purpose: Returns a GeneralRelation after replacement of
     --          NamedUnknowns by an associated expression, and after
     --          values computation.
-    returns mutable GeneralRelation
+    returns GeneralRelation
     raises NumericError;
     
     Simplify(me : mutable)
@@ -82,7 +82,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     Contains(me; exp : GeneralExpression)
     ---Purpose: Tests if <me> contains <exp>.

src/Expr/Expr_Tangent.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the tangent of <exp>.
-    returns mutable Tangent;
+    returns Tangent;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_Tanh.cdl

@@ -31,7 +31,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Creates the hyperbolic tangent of <exp>.
-    returns mutable Tanh;
+    returns Tanh;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -41,7 +41,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_UnaryFunction.cdl

@@ -37,7 +37,7 @@ is
     Create(func : GeneralFunction; exp : GeneralExpression)
     ---Purpose: Creates me as <func>(<exp>).
     --          Raises exception if <func> is not unary.
-    returns mutable UnaryFunction
+    returns UnaryFunction
     raises InvalidFunction;
 
     Function(me)
@@ -52,7 +52,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.

src/Expr/Expr_UnaryMinus.cdl

@@ -32,7 +32,7 @@ is
 
     Create(exp : GeneralExpression)
     ---Purpose: Create the unary minus of <exp>.
-    returns mutable UnaryMinus;
+    returns UnaryMinus;
 
     ShallowSimplified(me) 
     ---Purpose: Returns a GeneralExpression after a simplification 
@@ -42,7 +42,7 @@ is
 
     Copy(me)
     ---Purpose: Returns a copy of <me> having the same unknowns and functions.
-    returns mutable like me;
+    returns like me;
     
     IsIdentical(me; Other : GeneralExpression)
     ---Purpose: Tests if <me> and <Other> define the same expression.