diff --git a/src/mathed/math_boxinset.C b/src/mathed/math_boxinset.C
index 2e1c3bacde..16263fb172 100644
--- a/src/mathed/math_boxinset.C
+++ b/src/mathed/math_boxinset.C
@@ -70,7 +70,6 @@ void MathBoxInset::metrics(MathMetricsInfo const & st) const
 void MathBoxInset::draw(Painter & pain, int x, int y) const
 {
 	float fx = x + 2;
-
 	if (text_ && mi_.view)
 		text_->draw(mi_.view, mi_.font, y, fx, false);
 	if (mathcursor && mathcursor->isInside(this))
diff --git a/src/mathed/math_boxinset.h b/src/mathed/math_boxinset.h
index a3d8202c75..6e7ac2fd05 100644
--- a/src/mathed/math_boxinset.h
+++ b/src/mathed/math_boxinset.h
@@ -36,6 +36,8 @@ public:
 	void metrics(MathMetricsInfo const &) const;
 	/// identifies BoxInsets
 	MathBoxInset * asBoxInset() { return this; }
+	///
+	bool isHyperActive() const { return 1; }
 
 private:
 	/// unimplemented
diff --git a/src/mathed/math_cursor.C b/src/mathed/math_cursor.C
index 6535c43bd3..822b1d97fc 100644
--- a/src/mathed/math_cursor.C
+++ b/src/mathed/math_cursor.C
@@ -243,6 +243,9 @@ bool MathCursor::isInside(MathInset const * p) const
 
 bool MathCursor::openable(MathAtom const & t, bool sel) const
 {
+	if (t->isHyperActive())
+		return true;
+
 	if (!t->isActive())
 		return false;
 
@@ -304,6 +307,9 @@ bool MathCursor::left(bool sel)
 	lastcode_ = LM_TC_VAR;
 
 	if (hasPrevAtom() && openable(prevAtom(), sel)) {
+		if (prevAtom()->isHyperActive()) {
+			lyxerr << "entering hyperactive inset\n";
+		}
 		pushRight(prevAtom());
 		return true;
 	} 
@@ -324,6 +330,9 @@ bool MathCursor::right(bool sel)
 	lastcode_ = LM_TC_VAR;
 
 	if (hasNextAtom() && openable(nextAtom(), sel)) {
+		if (nextAtom()->isHyperActive()) {
+			lyxerr << "entering hyperactive inset\n";
+		}
 		pushLeft(nextAtom());
 		return true;
 	}
diff --git a/src/mathed/math_factory.C b/src/mathed/math_factory.C
index 49201ac994..10f0082e76 100644
--- a/src/mathed/math_factory.C
+++ b/src/mathed/math_factory.C
@@ -2,7 +2,7 @@
 
 #include "math_parser.h"
 #include "math_binominset.h"
-//#include "math_boxinset.h"
+#include "math_boxinset.h"
 #include "math_decorationinset.h"
 #include "math_dotsinset.h"
 #include "math_funcinset.h"
@@ -63,8 +63,8 @@ MathAtom createMathInset(latexkeys const * l)
 		return MathAtom(new MathSpaceInset(l->id));
 	case LM_TK_DOTS:
 		return MathAtom(new MathDotsInset(l->name));
-	//case LM_TK_BOX:
-	//	return MathAtom(new MathBoxInset(l->name));
+	case LM_TK_BOX:
+		return MathAtom(new MathBoxInset(l->name));
 	}
 	return MathAtom(new MathFuncInset(l->name));
 }
diff --git a/src/mathed/math_inset.C b/src/mathed/math_inset.C
index 40984b1670..6c20b0e181 100644
--- a/src/mathed/math_inset.C
+++ b/src/mathed/math_inset.C
@@ -56,28 +56,28 @@ MathXArray dummyCell;
 
 MathXArray & MathInset::xcell(idx_type)
 {
-	lyxerr << "I don't have a cell\n";
+	lyxerr << "I don't have a cell 1\n";
 	return dummyCell;
 }
 
 
 MathXArray const & MathInset::xcell(idx_type) const
 {
-	lyxerr << "I don't have a cell\n";
+	lyxerr << "I don't have a cell 2\n";
 	return dummyCell;
 }
 
 
 MathArray & MathInset::cell(idx_type)
 {
-	lyxerr << "I don't have a cell\n";
+	lyxerr << "I don't have a cell 3\n";
 	return dummyCell.data_;
 }
 
 
 MathArray const & MathInset::cell(idx_type) const
 {
-	lyxerr << "I don't have a cell\n";
+	lyxerr << "I don't have a cell 4\n";
 	return dummyCell.data_;
 }
 
diff --git a/src/mathed/math_inset.h b/src/mathed/math_inset.h
index d2a8802bdd..ebdae3f548 100644
--- a/src/mathed/math_inset.h
+++ b/src/mathed/math_inset.h
@@ -222,6 +222,8 @@ public:
 	virtual bool isScriptable() const { return false; }
 	///
 	virtual bool isActive() const { return nargs() > 0; }
+	/// identifies insets from the outer world
+	virtual bool isHyperActive() const { return 0; }
 	///
 	virtual bool isRelOp() const { return false; }
 	///