diff --git a/src/SerializedObject.h b/src/SerializedObject.h
index d3cdeca37..a0f8c3413 100644
--- a/src/SerializedObject.h
+++ b/src/SerializedObject.h
@@ -1,6 +1,8 @@
 #ifndef __SERIALIZEDOBJECT__
 #define __SERIALIZEDOBJECT__
 
+#include <vector>
+
 #include <boost/ptr_container/ptr_vector.hpp>
 
 #include "SerializedTypes.h"
@@ -18,22 +20,16 @@ struct SOElement
 	int e_flags;
 };
 
-struct SOType
-{ // A type of serialized object
-	const char *name;
-	std::list<SOElement> elements;
-};
-
 class STUObject : public SerializedType
 {
 protected:
-	SOType *type;
 	boost::ptr_vector<SerializedType> data;
+	std::vector<SOElement*> type;
 
 public:
-	STUObject(const char *n=NULL) : SerializedType(n), type(NULL) { ; }
-	STUObject(SOType *t) : type(t) { ; }
-	STUObject(SOType *t, SerializerIterator& u);
+	STUObject(const char *n=NULL) : SerializedType(n) { ; }
+	STUObject(SOElement *t, const char *n=NULL);
+	STUObject(SOElement *t, SerializerIterator& u, const char *n=NULL);
 	virtual ~STUObject() { ; }
 
 	int getLength() const;
diff --git a/src/SerializedTransaction.cpp b/src/SerializedTransaction.cpp
index 6b33f0442..ce7d97f29 100644
--- a/src/SerializedTransaction.cpp
+++ b/src/SerializedTransaction.cpp
@@ -10,38 +10,7 @@ SerializedTransaction::SerializedTransaction(TransactionType type)
 	mMiddleTxn.giveObject(new STVariableLength("Signature")); // signature
 	mMiddleTxn.giveObject(new STUInt8("Type", static_cast<unsigned char>(type)));
 
-	SOElement* elem=mFormat->elements;
-	while(elem->e_id!=STI_DONE)
-	{
-		if( (elem->e_type==SOE_IFFLAG) || (elem->e_type==SOE_IFNFLAG) )
-			mInnerTxn.giveObject(new STUObject(elem->e_name));
-		else switch(elem->e_id)
-		{
-			case STI_UINT16:
-				mInnerTxn.giveObject(new STUInt16(elem->e_name));
-				break;
-			case STI_UINT32:
-				mInnerTxn.giveObject(new STUInt32(elem->e_name));
-				break;
-			case STI_UINT64:
-				mInnerTxn.giveObject(new STUInt64(elem->e_name));
-			case STI_HASH160:
-			case STI_HASH256:
-			case STI_VL:
-				mInnerTxn.giveObject(new STVariableLength(elem->e_name));
-				break;
-			case STI_TL:
-				mInnerTxn.giveObject(new STTaggedList(elem->e_name));
-				break;
-#if 0
-			case STI_ACCOUNT: // CHECKME: Should an account be variable length?
-				mInnerTxn.giveObject(new STVariableLength(elem->e_name));
-				break;
-#endif
-			default: throw(std::runtime_error("invalid transaction element"));
-		}
-		elem++;
-	}
+	mInnerTxn=STUObject(mFormat->elements, "InnerTransaction");
 }
 
 SerializedTransaction::SerializedTransaction(SerializerIterator& sit, int length)
@@ -57,9 +26,13 @@ SerializedTransaction::SerializedTransaction(SerializerIterator& sit, int length
 
 	mMiddleTxn.giveObject(new STUInt32("Magic", TransactionMagic));
 	mMiddleTxn.giveObject(new STVariableLength("Signature", sit.getVL()));
-	mMiddleTxn.giveObject(new STUInt32("Type", sit.get32()));
 
-	// WRITEME
+	int type=sit.get32();
+	mMiddleTxn.giveObject(new STUInt32("Type", type));
+	mFormat=getFormat(static_cast<TransactionType>(type));
+	if(!mFormat) throw(std::runtime_error("Transaction has invalid type"));
+
+	mInnerTxn=STUObject(mFormat->elements, sit, "InnerTransaction");
 }
 
 int SerializedTransaction::getLength() const
diff --git a/src/SerializedTypes.cpp b/src/SerializedTypes.cpp
index 6be7880f9..9f94631b7 100644
--- a/src/SerializedTypes.cpp
+++ b/src/SerializedTypes.cpp
@@ -20,9 +20,9 @@ std::string SerializedType::getFullText() const
 	return ret;
 }
 
-STUInt8* STUInt8::construct(SerializerIterator& u)
+STUInt8* STUInt8::construct(SerializerIterator& u, const char *name)
 {
-	return new STUInt8(u.get8());
+	return new STUInt8(name, u.get8());
 }
 
 std::string STUInt8::getText() const
@@ -30,9 +30,9 @@ std::string STUInt8::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
-STUInt16* STUInt16::construct(SerializerIterator& u)
+STUInt16* STUInt16::construct(SerializerIterator& u, const char *name)
 {
-	return new STUInt16(u.get16());
+	return new STUInt16(name, u.get16());
 }
 
 std::string STUInt16::getText() const
@@ -40,9 +40,9 @@ std::string STUInt16::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
-STUInt32* STUInt32::construct(SerializerIterator& u)
+STUInt32* STUInt32::construct(SerializerIterator& u, const char *name)
 {
-	return new STUInt32(u.get32());
+	return new STUInt32(name, u.get32());
 }
 
 std::string STUInt32::getText() const
@@ -50,9 +50,9 @@ std::string STUInt32::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
-STUInt64* STUInt64::construct(SerializerIterator& u)
+STUInt64* STUInt64::construct(SerializerIterator& u, const char *name)
 {
-	return new STUInt64(u.get64());
+	return new STUInt64(name, u.get64());
 }
 
 std::string STUInt64::getText() const
@@ -60,22 +60,22 @@ std::string STUInt64::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
-STUHash160* STUHash160::construct(SerializerIterator& u)
+STHash160* STHash160::construct(SerializerIterator& u, const char *name)
 {
-	return new STUHash160(u.get160());
+	return new STHash160(name, u.get160());
 }
 
-std::string STUHash160::getText() const
+std::string STHash160::getText() const
 {
 	return value.GetHex();
 }
 
-STUHash256* STUHash256::construct(SerializerIterator& u)
+STHash256* STHash256::construct(SerializerIterator& u, const char *name)
 {
-	return new STUHash256(u.get256());
+	return new STHash256(name, u.get256());
 }
 
-std::string STUHash256::getText() const
+std::string STHash256::getText() const
 {
 	return value.GetHex();
 }
@@ -94,7 +94,7 @@ std::string STVariableLength::getText() const
 	return hex(value);
 }
 
-STVariableLength* STVariableLength::construct(SerializerIterator& u)
+STVariableLength* STVariableLength::construct(SerializerIterator& u, const char *name)
 {
 	return new STVariableLength(u.getVL());
 }
@@ -116,60 +116,15 @@ std::string STTaggedList::getText() const
 	return ret;
 }
 
-STTaggedList* STTaggedList::construct(SerializerIterator& u)
+STTaggedList* STTaggedList::construct(SerializerIterator& u, const char *name)
 {
-	return new STTaggedList(u.getTaggedList());
+	return new STTaggedList(name, u.getTaggedList());
 }
 
 int STTaggedList::getLength() const
 {
 	int ret=Serializer::getTaggedListLength(value);
-	if(ret<0) throw(0);
+	if(ret<0) throw(std::overflow_error("bad TL length"));
 	return ret;
 }
 
-std::string STUObject::getFullText() const
-{
-	std::string ret;
-	if(name!=NULL)
-	{
-		ret=name;
-		ret+=" = {";
-	}
-	else ret="{";
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
-		ret+=it->getFullText();
-	ret+="}";
-	return ret;
-}
-
-int STUObject::getLength() const
-{
-	int ret=0;
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
-		ret+=it->getLength();
-	return ret;
-}
-
-void STUObject::add(Serializer& s) const
-{
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
-		it->add(s);
-}
-
-std::string STUObject::getText() const
-{
-	std::string ret="{";
-	bool first=false;
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
-	{
-		if(!first)
-		{
-			ret+=", ";
-			first=false;
-		}
-		ret+=it->getText();
-	}
-	ret+="}";
-	return ret;
-}
diff --git a/src/SerializedTypes.h b/src/SerializedTypes.h
index 617948c29..8a9fced78 100644
--- a/src/SerializedTypes.h
+++ b/src/SerializedTypes.h
@@ -36,7 +36,7 @@ public:
 
 	virtual int getLength() const { return 0; }
 	virtual SerializedTypeID getType() const { return STI_NOTPRESENT; }
-	virtual SerializedType* duplicate() const { return new SerializedType(); }
+	virtual SerializedType* duplicate() const { return new SerializedType(name); }
 
 	virtual std::string getFullText() const;
 	virtual std::string getText() const // just the value
@@ -57,11 +57,11 @@ public:
 
 	STUInt8(unsigned char v=0) : value(v) { ; }
 	STUInt8(const char *n, unsigned char v=0) : SerializedType(n), value(v) { ; }
-	static STUInt8* construct(SerializerIterator&);
+	static STUInt8* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const { return 1; }
 	SerializedTypeID getType() const { return STI_UINT8; }
-	STUInt8 *duplicate() const { return new STUInt8(value); }
+	STUInt8 *duplicate() const { return new STUInt8(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.add8(value); }
 
@@ -81,11 +81,11 @@ public:
 
 	STUInt16(uint16 v=0) : value(v) { ; }
 	STUInt16(const char *n, uint16 v=0) : SerializedType(n), value(v) { ; }
-	static STUInt16* construct(SerializerIterator&);
+	static STUInt16* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const { return 2; }
 	SerializedTypeID getType() const { return STI_UINT16; }
-	STUInt16 *duplicate() const { return new STUInt16(value); }
+	STUInt16 *duplicate() const { return new STUInt16(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.add16(value); }
 
@@ -105,11 +105,11 @@ public:
 
 	STUInt32(uint32 v=0) : value(v) { ; }
 	STUInt32(const char *n, uint32 v=0) : SerializedType(n), value(v) { ; }
-	static STUInt32* construct(SerializerIterator&);
+	static STUInt32* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const { return 4; }
 	SerializedTypeID getType() const { return STI_UINT32; }
-	STUInt32 *duplicate() const { return new STUInt32(value); }
+	STUInt32 *duplicate() const { return new STUInt32(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.add32(value); }
 
@@ -129,11 +129,11 @@ public:
 
 	STUInt64(uint64 v=0) : value(v) { ; }
 	STUInt64(const char *n, uint64 v=0) : SerializedType(n), value(v) { ; }
-	static STUInt64* construct(SerializerIterator&);
+	static STUInt64* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const { return 8; }
 	SerializedTypeID getType() const { return STI_UINT64; }
-	STUInt64 *duplicate() const { return new STUInt64(value); }
+	STUInt64 *duplicate() const { return new STUInt64(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.add64(value); }
 
@@ -144,21 +144,21 @@ public:
 	STUInt64& operator=(uint64 v) { value=v; return *this; }
 };
 
-class STUHash160 : public SerializedType
+class STHash160 : public SerializedType
 {
 protected:
 	uint160 value;
 
 public:
 
-	STUHash160(const uint160& v=uint160()) : value(v) { ; }
-	STUHash160(const char *n, const uint160& v=uint160()) : SerializedType(n), value(v) { ; }
-	STUHash160() { ; }
-	static STUHash160* construct(SerializerIterator&);
+	STHash160(const uint160& v=uint160()) : value(v) { ; }
+	STHash160(const char *n, const uint160& v=uint160()) : SerializedType(n), value(v) { ; }
+	STHash160() { ; }
+	static STHash160* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const { return 20; }
 	SerializedTypeID getType() const { return STI_HASH160; }
-	STUHash160 *duplicate() const { return new STUHash160(value); }
+	STHash160 *duplicate() const { return new STHash160(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.add160(value); }
 
@@ -166,24 +166,24 @@ public:
 	void setValue(const uint160& v) { value=v; }
 
 	operator uint160() const { return value; }
-	STUHash160& operator=(const uint160& v) { value=v; return *this; }
+	STHash160& operator=(const uint160& v) { value=v; return *this; }
 };
 
-class STUHash256 : public SerializedType
+class STHash256 : public SerializedType
 {
 protected:
 	uint256 value;
 
 public:
 
-	STUHash256(const uint256& v) : value(v) { ; }
-	STUHash256(const char *n, const uint256& v=uint256()) : SerializedType(n), value(v) { ; }
-	STUHash256() { ; }
-	static STUHash256* construct(SerializerIterator&);
+	STHash256(const uint256& v) : value(v) { ; }
+	STHash256(const char *n, const uint256& v=uint256()) : SerializedType(n), value(v) { ; }
+	STHash256() { ; }
+	static STHash256* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const { return 32; }
 	SerializedTypeID getType() const { return STI_HASH256; }
-	STUHash256 *duplicate() const { return new STUHash256(value); }
+	STHash256 *duplicate() const { return new STHash256(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.add256(value); }
 
@@ -191,7 +191,7 @@ public:
 	void setValue(const uint256& v) { value=v; }
 
 	operator uint256() const { return value; }
-	STUHash256& operator=(const uint256& v) { value=v; return *this; }
+	STHash256& operator=(const uint256& v) { value=v; return *this; }
 };
 
 class STVariableLength : public SerializedType
@@ -205,11 +205,11 @@ public:
 	STVariableLength(const char *n, const std::vector<unsigned char>& v) : SerializedType(n), value(v) { ; }
 	STVariableLength(const char *n) : SerializedType(n) { ; }
 	STVariableLength() { ; }
-	static STVariableLength* construct(SerializerIterator&);
+	static STVariableLength* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const;
 	SerializedTypeID getType() const { return STI_VL; }
-	STVariableLength *duplicate() const { return new STVariableLength(value); }
+	STVariableLength *duplicate() const { return new STVariableLength(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { s.addVL(value); }
 
@@ -233,11 +233,11 @@ public:
 	STTaggedList(const char *n) : SerializedType(n) { ; }
 	STTaggedList(const std::vector<TaggedListItem>& v) : value(v) { ; }
 	STTaggedList(const char *n, const std::vector<TaggedListItem>& v) : SerializedType(n), value(v) { ; }
-	static STTaggedList* construct(SerializerIterator&);
+	static STTaggedList* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const;
 	SerializedTypeID getType() const { return STI_TL; }
-	STTaggedList *duplicate() const { return new STTaggedList(value); }
+	STTaggedList *duplicate() const { return new STTaggedList(name, value); }
 	std::string getText() const;
 	virtual void add(Serializer& s) const { if(s.addTaggedList(value)<0) throw(0); }