diff --git a/src/mathed/Makefile.am b/src/mathed/Makefile.am
index a1a379d661..0ec4638b10 100644
--- a/src/mathed/Makefile.am
+++ b/src/mathed/Makefile.am
@@ -110,5 +110,7 @@ libmathed_la_SOURCES = \
 	math_support.h \
 	math_symbolinset.C \
 	math_symbolinset.h \
+	math_unknowninset.C \
+	math_unknowninset.h \
 	math_xdata.C \
 	math_xdata.h
diff --git a/src/mathed/math_data.C b/src/mathed/math_data.C
index 170ae41491..987dc0ff13 100644
--- a/src/mathed/math_data.C
+++ b/src/mathed/math_data.C
@@ -24,6 +24,11 @@ MathArray::MathArray(MathArray const & ar, size_type from, size_type to)
 {}
 
 
+MathArray::MathArray(iterator from, iterator to)
+	: bf_(from, to)
+{}
+
+
 void MathArray::substitute(MathMacro const & m)
 {
 	for (iterator it = begin(); it != end(); ++it)
@@ -96,7 +101,7 @@ MathArray::size_type MathArray::size() const
 
 void MathArray::erase()
 {
-	erase(0, size());
+	bf_.erase(begin(), end());
 }
 
 
@@ -107,6 +112,18 @@ void MathArray::erase(size_type pos)
 }
 
 
+void MathArray::erase(iterator pos1, iterator pos2)
+{
+	bf_.erase(pos1, pos2);
+}
+
+
+void MathArray::erase(iterator pos)
+{
+	bf_.erase(pos);
+}
+
+
 void MathArray::erase(size_type pos1, size_type pos2)
 {
 	bf_.erase(begin() + pos1, begin() + pos2);
diff --git a/src/mathed/math_data.h b/src/mathed/math_data.h
index eaca3d61eb..f47d9dac01 100644
--- a/src/mathed/math_data.h
+++ b/src/mathed/math_data.h
@@ -56,6 +56,8 @@ public:
 	MathArray();
 	///
 	MathArray(MathArray const &, size_type from, size_type to);
+	///
+	MathArray(iterator from, iterator to);
 
 	///
 	size_type size() const;
@@ -71,6 +73,10 @@ public:
 	///
 	void insert(size_type pos, MathArray const &);
 
+	///
+	void erase(iterator pos1, iterator pos2);
+	///
+	void erase(iterator pos);
 	///
 	void erase(size_type pos1, size_type pos2);
 	///
diff --git a/src/mathed/math_deliminset.C b/src/mathed/math_deliminset.C
index 435b33f1f0..f74f8086a3 100644
--- a/src/mathed/math_deliminset.C
+++ b/src/mathed/math_deliminset.C
@@ -91,9 +91,27 @@ void MathDelimInset::draw(Painter & pain, int x, int y) const
 }
 
 
+bool MathDelimInset::isParanthesis() const
+{
+	return left_ == "(" && right_ == ")";
+}
+
+
+bool MathDelimInset::isBrackets() const
+{
+	return left_ == "[" && right_ == "]";
+}
+
+
+bool MathDelimInset::isAbs() const
+{
+	return left_ == "|" && right_ == "|";
+}
+
+
 void MathDelimInset::maplize(MapleStream & os) const
 {
-	if (left_ == "|" && right_ == "|") {
+	if (isAbs()) {
 		bool mat =
 			cell(0).size() == 1 && cell(0).begin()->nucleus()
 					&& cell(0).begin()->nucleus()->asMatrixInset();
@@ -116,7 +134,7 @@ void MathDelimInset::mathmlize(MathMLStream & os) const
 
 void MathDelimInset::octavize(OctaveStream & os) const
 {
-	if (left_ == "|" && right_ == "|")
+	if (isAbs())
 		os << "det(" << cell(0) << ")";
 	else
 		os << left_.c_str() << cell(0) << right_.c_str();
diff --git a/src/mathed/math_deliminset.h b/src/mathed/math_deliminset.h
index c896ee7ca3..16ff2f20d3 100644
--- a/src/mathed/math_deliminset.h
+++ b/src/mathed/math_deliminset.h
@@ -23,6 +23,12 @@ public:
 	MathDelimInset * asDelimInset() { return this; }
 	///
 	MathDelimInset const * asDelimInset() const { return this; }
+	/// is it (...)?
+	bool isParanthesis() const;
+	/// is it [...]?
+	bool isBrackets() const;
+	/// is it |...|?
+	bool isAbs() const;
 	///
 	void metrics(MathMetricsInfo const & st) const;
 	///
diff --git a/src/mathed/math_exfuncinset.C b/src/mathed/math_exfuncinset.C
index 8b08428c1e..475932c23b 100644
--- a/src/mathed/math_exfuncinset.C
+++ b/src/mathed/math_exfuncinset.C
@@ -6,9 +6,11 @@
 using std::ostream;
 
 
-MathExFuncInset::MathExFuncInset(string const & name)
+MathExFuncInset::MathExFuncInset(string const & name, MathArray const & arg)
 	: MathNestInset(1), name_(name)
-{}
+{
+	cell(0) = arg;
+}
 
 
 MathInset * MathExFuncInset::clone() const
diff --git a/src/mathed/math_exfuncinset.h b/src/mathed/math_exfuncinset.h
index 0c71ad57ec..5144bb6825 100644
--- a/src/mathed/math_exfuncinset.h
+++ b/src/mathed/math_exfuncinset.h
@@ -10,7 +10,7 @@
 class MathExFuncInset : public MathNestInset {
 public:
 	///
-	explicit MathExFuncInset(string const & name);
+	MathExFuncInset(string const & name, MathArray const & arg);
 	///
 	MathInset * clone() const;
 	///
diff --git a/src/mathed/math_extern.C b/src/mathed/math_extern.C
new file mode 100644
index 0000000000..7e1f1122bf
--- /dev/null
+++ b/src/mathed/math_extern.C
@@ -0,0 +1,309 @@
+
+// This file contains most of the magic that extracts "context
+// information" from the unstructered layout-oriented stuff in an
+// MathArray.
+
+
+#include "math_charinset.h"
+#include "math_deliminset.h"
+#include "math_exfuncinset.h"
+#include "math_funcinset.h"
+#include "math_matrixinset.h"
+#include "math_mathmlstream.h"
+#include "math_scriptinset.h"
+#include "math_stringinset.h"
+#include "debug.h"
+
+
+std::ostream & operator<<(ostream & os, MathArray const & ar)
+{
+	NormalStream ws(os);	
+	ws << ar;
+	return os;
+}
+
+
+MathScriptInset const * asScript(MathArray::const_iterator it)
+{
+	if (it->nucleus()->asScriptInset())
+		return 0;
+	++it;
+	if (!it->nucleus())
+		return 0;
+	return it->nucleus()->asScriptInset();
+}
+
+
+
+// returns sequence of char with same code starting at it up to end
+// it might be less, though...
+string charSequence(MathArray::const_iterator it, MathArray::const_iterator end)
+{
+	string s;
+	MathCharInset const * p = it->nucleus()->asCharInset();
+	if (p) {
+		for (MathTextCodes c = p->code(); it != end; ++it) {
+			if (!it->nucleus())
+				break;
+			p = it->nucleus()->asCharInset();
+			if (!p || p->code() != c)
+				break;
+			s += p->getChar();
+		}
+	}
+	return s;
+}
+
+
+void glueChars(MathArray & dat)
+{
+	MathArray ar;
+	MathArray::const_iterator it = dat.begin();
+	while (it != dat.end()) {
+		if (it->nucleus() && it->nucleus()->asCharInset()) {
+			string s = charSequence(it, dat.end());
+			MathTextCodes c = it->nucleus()->asCharInset()->code();
+			ar.push_back(MathAtom(new MathStringInset(s, c)));
+			it += s.size();
+		} else {
+			ar.push_back(*it);
+			++it;
+		}
+	}
+	ar.swap(dat);
+}
+
+
+bool needAsterisk(MathAtom const &, MathAtom const &)
+{
+	return false;
+}
+
+
+void guessAsterisks(MathArray & dat)
+{
+	if (dat.size() <= 1)
+		return;
+	MathArray ar;
+	ar.push_back(*dat.begin());
+	MathArray::const_iterator it = dat.begin();
+	MathArray::const_iterator jt = it + 1;
+	for (; jt != dat.end(); ++it, ++jt) {
+		if (needAsterisk(*it, *jt))
+			ar.push_back(MathAtom(new MathCharInset('*')));
+		ar.push_back(*it);
+	}
+	ar.push_back(*dat.end());
+	ar.swap(dat);
+}
+
+
+MathInset * singleItem(MathArray & ar)
+{
+	lyxerr << "ar.size: " << ar.size() << "\n";
+	//lyxerr << "ar.begin: " << ar.begin() << "\n";
+	//lyxerr << "ar.nuc: " << ar.begin()->nucleus() << "\n";
+	lyxerr << "ar.nuc: " << *ar.begin()->nucleus() << "\n";
+	return ar.size() == 1 ? ar.begin()->nucleus() : 0;
+}
+
+
+void extractMatrices(MathArray & ar)
+{
+	for (MathArray::iterator it = ar.begin(); it != ar.end(); ++it) {
+		if (!it->nucleus())
+			continue;	
+		MathDelimInset * del = it->nucleus()->asDelimInset();
+		if (!del)
+			continue;
+		MathInset * arr = singleItem(del->cell(0));
+		if (!arr || !arr->asArrayInset())
+			continue;
+		*it = MathAtom(new MathMatrixInset(*(arr->asArrayInset())));
+	}
+} 
+
+
+void extractDelims(MathArray & ar) {
+	// use indices rather than iterators for the loop  because we are going
+	// to modify the array.
+	for (MathArray::size_type i = 0; i < ar.size(); ++i) {
+		MathArray::iterator it = ar.begin() + i;
+		if (!it->nucleus())
+			continue;	
+		if ((*it)->getChar() != '(')
+			continue;
+
+		// search last closing paranthesis
+		MathArray::iterator et = ar.end();
+		for (MathArray::iterator jt = it + 1; jt != ar.end(); ++jt)
+			if ((*jt)->getChar() == ')')
+				et = jt;
+		if (et == ar.end())
+			continue;
+
+		// create a proper deliminset
+		MathAtom at(new MathDelimInset("(", ")"));
+		at->cell(0) = MathArray(it + 1, et);
+
+		// replace the original stuff by the new inset
+		ar.erase(it + 1, et + 1);
+		*it = at;
+	}
+} 
+
+
+// assume 'extractDelims' ran before
+void extractFunctions(MathArray & ar)
+{
+	// we need at least two items...
+	if (ar.size() <= 1)
+		return;
+
+	for (MathArray::size_type i = 0; i < ar.size() - 1; ++i) {
+		MathArray::iterator it = ar.begin() + i;
+
+		// is this a function name?
+		if (!it->nucleus())
+			continue;	
+		MathFuncInset * func = (*it)->asFuncInset();
+		if (!func)
+			continue;
+
+		// do we have an exponent?
+		// simply skippping the postion does the right thing:
+		// 'sin' '^2' 'x' -> 'sin(x)' '^2'
+		MathArray::iterator jt = it + 1;
+		if (MathScriptInset * script = (*jt)->asScriptInset()) {
+			// allow superscripts only
+			if (script->hasDown())
+				continue;
+			++jt;
+			if (jt == ar.end())
+				continue;
+		}
+
+		// jt points now to the "argument". Since we had run "extractDelims"
+		// before, this could be a single argument only. Get hold of this.
+		MathArray arg;
+		MathDelimInset * del = (*jt)->asDelimInset();
+		if (del && del->isParanthesis()) 
+			arg = del->cell(0);
+		else
+			arg.push_back(*jt);
+
+		// replace the function name by a real function inset
+		(*it).reset(new MathExFuncInset(func->name(), arg));
+		
+		// remove the source of the argument from the array
+		ar.erase(jt);
+	}
+} 
+
+
+void extractStructure(MathArray & ar)
+{
+	glueChars(ar);
+	extractMatrices(ar);
+	extractDelims(ar);
+	extractFunctions(ar);
+}
+
+
+void write(MathArray const & dat, WriteStream & wi)
+{
+	MathArray ar = dat;
+	glueChars(ar);
+	for (MathArray::const_iterator it = ar.begin(); it != ar.end(); ++it) {
+		MathInset const * p = it->nucleus();
+		if (it + 1 != ar.end()) {
+			if (MathScriptInset const * q = asScript(it)) {
+				q->write(p, wi);
+				++it;
+				continue;
+			} 
+		}
+		p->write(wi);
+	}
+}
+
+
+void normalize(MathArray const & dat, NormalStream & os)
+{
+	MathArray ar = dat;
+	glueChars(ar);
+	for (MathArray::const_iterator it = ar.begin(); it != ar.end(); ++it) {
+		MathInset const * p = it->nucleus();
+		if (it + 1 != ar.end()) {
+			if (MathScriptInset const * q = asScript(it)) {
+				q->normalize(p, os);
+				++it;	
+				continue;
+			}
+		}
+		p->normalize(os);
+	}
+}
+
+
+void octavize(MathArray const & dat, OctaveStream & os)
+{
+	MathArray ar = dat;
+	extractStructure(ar);
+	for (MathArray::const_iterator it = ar.begin(); it != ar.end(); ++it) {
+		MathInset const * p = it->nucleus();
+		if (it + 1 != ar.end()) {
+			if (MathScriptInset const * q = asScript(it)) {
+				q->octavize(p, os);
+				++it;	
+				continue;
+			}
+		}
+		p->octavize(os);
+	}
+}
+
+
+void maplize(MathArray const & dat, MapleStream & os)
+{
+	MathArray ar = dat;
+	extractStructure(ar);
+	for (MathArray::const_iterator it = ar.begin(); it != ar.end(); ++it) {
+		MathInset const * p = it->nucleus();
+		if (it + 1 != ar.end()) {
+			if (MathScriptInset const * q = asScript(it)) {
+				q->maplize(p, os);
+				++it;	
+				continue;
+			}
+		}
+		p->maplize(os);
+	}
+}
+
+
+void mathmlize(MathArray const & dat, MathMLStream & os)
+{
+	MathArray ar = dat;
+	extractStructure(ar);
+	if (ar.size() == 0)
+		os << "<mrow/>";
+	else if (ar.size() == 1)
+		os << ar.begin()->nucleus();
+	else {
+		os << MTag("mrow");
+		for (MathArray::const_iterator it = ar.begin(); it != ar.end(); ++it) {
+			MathInset const * p = it->nucleus();
+			if (it + 1 != ar.end()) {
+				if (MathScriptInset const * q = asScript(it)) {
+					q->mathmlize(p, os);
+					++it;	
+					continue;
+				}
+			}
+			p->mathmlize(os);
+		}
+		os << ETag("mrow");
+	}
+}
+
diff --git a/src/mathed/math_extern.h b/src/mathed/math_extern.h
new file mode 100644
index 0000000000..134561cf5f
--- /dev/null
+++ b/src/mathed/math_extern.h
@@ -0,0 +1,17 @@
+#ifndef MATH_EXTERN_H
+#define MATH_EXTERN_H
+
+class NormalStream;
+class MapleStream;
+class MathMLStream;
+class OctaveStream;
+class WriteStream;
+class MathArray;
+
+void write(MathArray const &, WriteStream &);
+void normalize(MathArray const &, NormalStream &);
+void maplize(MathArray const &, MapleStream &);
+void mathmlize(MathArray const &, MathMLStream &);
+void octavize(MathArray const &, OctaveStream &);
+
+#endif
diff --git a/src/mathed/math_factory.C b/src/mathed/math_factory.C
index a23ea6e197..327624ec0d 100644
--- a/src/mathed/math_factory.C
+++ b/src/mathed/math_factory.C
@@ -18,8 +18,9 @@
 #include "math_spaceinset.h"
 #include "math_specialcharinset.h"
 #include "math_sqrtinset.h"
-#include "math_symbolinset.h"
 #include "math_stackrelinset.h"
+#include "math_symbolinset.h"
+#include "math_unknowninset.h"
 
 
 MathAtom createMathInset(latexkeys const * l)
@@ -65,8 +66,10 @@ MathAtom createMathInset(latexkeys const * l)
 		return MathAtom(new MathDotsInset(l->name));
 	case LM_TK_BOX:
 		return MathAtom(new MathBoxInset(l->name));
+	case LM_TK_FUNC:
+		return MathAtom(new MathFuncInset(l->name));
 	}
-	return MathAtom(new MathFuncInset(l->name));
+	return MathAtom(new MathUnknownInset(l->name));
 }
 
 
@@ -88,5 +91,5 @@ MathAtom createMathInset(string const & s)
 		return MathAtom(new MathMacro(s));
 
 	//cerr << "creating inset 2 with name: '" << s << "'\n";
-	return MathAtom(new MathFuncInset(s));
+	return MathAtom(new MathUnknownInset(s));
 }
diff --git a/src/mathed/math_funcinset.h b/src/mathed/math_funcinset.h
index 42d4a2e055..d5d270c7f1 100644
--- a/src/mathed/math_funcinset.h
+++ b/src/mathed/math_funcinset.h
@@ -23,19 +23,22 @@ public:
 	///
 	void draw(Painter &, int x, int y) const;
 	///
-	void write(WriteStream &) const;
-	///
-	void normalize(NormalStream &) const;
-	///
 	string const & name() const;
+	/// identifies FuncInsets
+	MathFuncInset * asFuncInset() { return this; }
 	///
 	void setName(string const &);
+
+	///
+	void normalize(NormalStream &) const;
 	///
 	void maplize(MapleStream &) const;
 	///
 	void mathmlize(MathMLStream &) const;
 	///
 	void octavize(OctaveStream &) const;
+	///
+	void write(WriteStream &) const;
 private:
 	///
 	string name_;
diff --git a/src/mathed/math_hullinset.C b/src/mathed/math_hullinset.C
index 8cb6fc62c3..08c8dc1926 100644
--- a/src/mathed/math_hullinset.C
+++ b/src/mathed/math_hullinset.C
@@ -532,14 +532,12 @@ void MathHullInset::mutate(MathInsetTypes newtype)
 
 					// split it "nicely" on the firest relop
 					pos_type pos = firstRelOp(cell(0));	
-					cell(1) = cell(0);
+					cell(1) = MathArray(cell(0), pos, cell(0).size());
 					cell(0).erase(pos, cell(0).size());
-					cell(1).erase(0, pos);
 
 					if (cell(1).size()) {
-						cell(2) = cell(1);
+						cell(2) = MathArray(cell(1), 1, cell(1).size());
 						cell(1).erase(1, cell(1).size());
-						cell(2).erase(0);
 					}
 
 					setType(LM_OT_EQNARRAY);
diff --git a/src/mathed/math_inset.h b/src/mathed/math_inset.h
index 315af30e24..8b611d3efa 100644
--- a/src/mathed/math_inset.h
+++ b/src/mathed/math_inset.h
@@ -42,6 +42,7 @@ class MathArrayInset;
 class MathBoxInset;
 class MathCharInset;
 class MathDelimInset;
+class MathFuncInset;
 class MathGridInset;
 class MathHullInset;
 class MathMatrixInset;
@@ -170,39 +171,38 @@ public:
 	virtual bool covers(int x, int y) const;
 
 	/// identifies NestInsets
-	virtual MathNestInset * asNestInset() { return 0; }
+	virtual MathNestInset         * asNestInset()         { return 0; }
 	/// identifies CharInsets
-	virtual MathCharInset const * asCharInset() const { return 0; }
+	virtual MathCharInset const   * asCharInset() const   { return 0; }
 	/// identifies ScriptInsets
+	virtual MathScriptInset       * asScriptInset()       { return 0; }
 	virtual MathScriptInset const * asScriptInset() const { return 0; }
-	/// identifies ScriptInsets
-	virtual MathScriptInset * asScriptInset() { return 0; }
 	/// identifies HullInsets
-	virtual MathHullInset const * asHullInset() const { return 0; }
-	/// identifies HullInsets
-	virtual MathHullInset * asHullInset() { return 0; }
+	virtual MathHullInset         * asHullInset()         { return 0; }
+	virtual MathHullInset const   * asHullInset() const   { return 0; }
 	/// identifies SpaceInset
-	virtual MathSpaceInset * asSpaceInset() { return 0; }
+	virtual MathSpaceInset        * asSpaceInset()        { return 0; }
 	/// identifies GridInset
-	virtual MathGridInset * asGridInset() { return 0; }
+	virtual MathGridInset         * asGridInset()         { return 0; }
 	/// identifies ArrayInsets
-	virtual MathArrayInset * asArrayInset() { return 0; }
+	virtual MathArrayInset        * asArrayInset()        { return 0; }
 	/// identifies MatrixInsets
 	virtual MathMatrixInset const * asMatrixInset() const { return 0; }
 	/// identifies BoxInsets
-	virtual MathBoxInset * asBoxInset() { return 0; }
+	virtual MathBoxInset          * asBoxInset()          { return 0; }
 	/// identifies DelimInsets
-	virtual MathDelimInset * asDelimInset() { return 0; }
-	/// identifies DelimInsets
-	virtual MathDelimInset const * asDelimInset() const { return 0; }
+	virtual MathDelimInset        * asDelimInset()        { return 0; }
+	virtual MathDelimInset const  * asDelimInset() const  { return 0; }
+	/// identifies FuncInsets
+	virtual MathFuncInset         * asFuncInset()         { return 0; }
 	/// identifies macro templates
-	virtual MathMacroTemplate * asMacroTemplate() { return 0; }
+	virtual MathMacroTemplate     * asMacroTemplate()     { return 0; }
 	/// identifies hyperactive insets
-	virtual UpdatableInset * asHyperActiveInset() const { return 0; }
+	virtual UpdatableInset   * asHyperActiveInset() const { return 0; }
 
 	/// identifies things that can get scripts
 	virtual bool isScriptable() const { return false; }
-	///
+	/// thing that can be moved into
 	virtual bool isActive() const { return nargs() > 0; }
 	/// identifies insets from the outer world
 	virtual bool isHyperActive() const { return 0; }
diff --git a/src/mathed/math_unknowninset.C b/src/mathed/math_unknowninset.C
new file mode 100644
index 0000000000..20e83eb96f
--- /dev/null
+++ b/src/mathed/math_unknowninset.C
@@ -0,0 +1,79 @@
+#ifdef __GNUG__
+#pragma implementation
+#endif
+
+#include "math_unknowninset.h"
+#include "font.h"
+#include "Painter.h"
+#include "math_support.h"
+#include "math_mathmlstream.h"
+
+
+
+extern LyXFont WhichFont(short type, int size);
+
+
+MathUnknownInset::MathUnknownInset(string const & nm)
+	: name_(nm)
+{}
+
+
+MathInset * MathUnknownInset::clone() const
+{
+	return new MathUnknownInset(*this);
+}
+
+
+string const & MathUnknownInset::name() const
+{
+	return name_;
+}
+
+
+void MathUnknownInset::setName(string const & n)
+{
+	name_ = n;
+}
+
+
+void MathUnknownInset::write(WriteStream & os) const
+{
+	os << "\\" << name_.c_str() << ' ';
+}
+
+
+void MathUnknownInset::normalize(NormalStream & os) const
+{
+	os << "[func " << name_.c_str() << ']';
+}
+
+
+void MathUnknownInset::metrics(MathMetricsInfo const & mi) const 
+{
+	mi_ = mi;
+	mathed_string_dim(LM_TC_TEX, mi_, name_, ascent_, descent_, width_);
+}
+
+
+void MathUnknownInset::draw(Painter & pain, int x, int y) const
+{ 
+	drawStr(pain, LM_TC_TEX, mi_, x, y, name_);
+}
+
+
+void MathUnknownInset::maplize(MapleStream & os) const
+{
+	os << name_.c_str();
+}
+
+
+void MathUnknownInset::mathmlize(MathMLStream & os) const
+{
+	os << MTag("mi") << name_.c_str() << ETag("mi");
+}
+
+
+void MathUnknownInset::octavize(OctaveStream & os) const
+{
+	os << name_.c_str();
+}
diff --git a/src/mathed/math_unknowninset.h b/src/mathed/math_unknowninset.h
new file mode 100644
index 0000000000..05805ff89f
--- /dev/null
+++ b/src/mathed/math_unknowninset.h
@@ -0,0 +1,48 @@
+// -*- C++ -*-
+#ifndef MATH_UNKNOWNINSET_H
+#define MATH_UNKNOWNINSET_H
+
+#include "math_diminset.h"
+#include "math_defs.h"
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+/**
+ Unknowntions or LaTeX names for objects that we really don't know
+ */
+class MathUnknownInset : public MathDimInset {
+public:
+	///
+	explicit MathUnknownInset(string const & nm);
+	///
+	MathInset * clone() const;
+	///
+	void metrics(MathMetricsInfo const & st) const;
+	///
+	void draw(Painter &, int x, int y) const;
+	///
+	string const & name() const;
+	/// identifies UnknownInsets
+	MathUnknownInset const * asUnknownInset() const { return this; }
+	///
+	void setName(string const &);
+
+	///
+	void normalize(NormalStream &) const;
+	///
+	void maplize(MapleStream &) const;
+	///
+	void mathmlize(MathMLStream &) const;
+	///
+	void octavize(OctaveStream &) const;
+	///
+	void write(WriteStream &) const;
+private:
+	///
+	string name_;
+	///
+	mutable MathMetricsInfo mi_;
+};
+#endif