diff --git a/alib2algo_experimental/src/grammar/parsing/LR0Parser.cpp b/alib2algo_experimental/src/grammar/parsing/LR0Parser.cpp
index b3a10d6ede6a41c13e0278c4f3f008b5eb3cd596..86355be0519d793e31338a5fefa260e0be1cbf10 100644
--- a/alib2algo_experimental/src/grammar/parsing/LR0Parser.cpp
+++ b/alib2algo_experimental/src/grammar/parsing/LR0Parser.cpp
@@ -9,8 +9,6 @@
 
 #include "LRParser.h"
 
-#include <label/LR0ItemsLabel.h>
-
 #include <queue>
 
 namespace grammar {
diff --git a/alib2algo_experimental/src/grammar/parsing/SLR1ParseTable.cpp b/alib2algo_experimental/src/grammar/parsing/SLR1ParseTable.cpp
index 408cd90ee13878c3c61e4842c4f2e08b6b380678..1d3993cd18877344de13dd7cb0eb02fd49fb32c1 100644
--- a/alib2algo_experimental/src/grammar/parsing/SLR1ParseTable.cpp
+++ b/alib2algo_experimental/src/grammar/parsing/SLR1ParseTable.cpp
@@ -12,7 +12,6 @@
 #include "Follow.h"
 
 #include <exception/CommonException.h>
-#include <label/LR0ItemsLabel.h>
 
 namespace grammar {
 
diff --git a/alib2algo_experimental/test-src/grammar/parsing/LR0Parser.cpp b/alib2algo_experimental/test-src/grammar/parsing/LR0Parser.cpp
index 457e4dda2b523c2b26f39900f0ef2a108385661a..ba5b4df136963067dcb83ad140258b85fd3b6cf6 100644
--- a/alib2algo_experimental/test-src/grammar/parsing/LR0Parser.cpp
+++ b/alib2algo_experimental/test-src/grammar/parsing/LR0Parser.cpp
@@ -3,8 +3,6 @@
 #include "grammar/parsing/LRParser.h"
 #include "grammar/parsing/LR0Parser.h"
 
-#include <label/LR0ItemsLabel.h>
-
 #include <alib/vector>
 
 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION ( LR0Parser, "grammar" );
diff --git a/alib2algo_experimental/test-src/grammar/parsing/LRParser.cpp b/alib2algo_experimental/test-src/grammar/parsing/LRParser.cpp
index 1d7c11cb716d1c16106c31c49b0c543fa394f6a4..a5bb9c5fb6cccff735ec23f454ac9a6a198adb98 100644
--- a/alib2algo_experimental/test-src/grammar/parsing/LRParser.cpp
+++ b/alib2algo_experimental/test-src/grammar/parsing/LRParser.cpp
@@ -3,8 +3,6 @@
 #include "grammar/parsing/LRParser.h"
 #include "grammar/parsing/SLR1ParseTable.h"
 
-#include <label/LR0ItemsLabel.h>
-
 #include <alib/vector>
 
 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION ( LRParser, "grammar" );
diff --git a/alib2algo_experimental/test-src/grammar/parsing/SLR1ParseTable.cpp b/alib2algo_experimental/test-src/grammar/parsing/SLR1ParseTable.cpp
index 59dc916c51ae1cd4eca559ce65e4311c983b6d05..832dfc56dc13f843467a44ab85bc1e8607a24765 100644
--- a/alib2algo_experimental/test-src/grammar/parsing/SLR1ParseTable.cpp
+++ b/alib2algo_experimental/test-src/grammar/parsing/SLR1ParseTable.cpp
@@ -3,8 +3,6 @@
 #include "grammar/parsing/LRParser.h"
 #include "grammar/parsing/SLR1ParseTable.h"
 
-#include <label/LR0ItemsLabel.h>
-
 #include <alib/variant>
 #include <alib/vector>
 
diff --git a/alib2data/src/PrimitiveRegistrator.cpp b/alib2data/src/PrimitiveRegistrator.cpp
index 0099f20b6f88e3d3f3114b11d8563a5c248e153e..25b0232c34cb9a9606b7a06a8c5049e64ec79a6f 100644
--- a/alib2data/src/PrimitiveRegistrator.cpp
+++ b/alib2data/src/PrimitiveRegistrator.cpp
@@ -76,7 +76,6 @@ public:
 		core::xmlApi < object::Object >::template registerXmlWriter < object::AnyObject < ext::vector < ext::variant < object::Object, object::Object > > > > ( );
 		core::xmlApi < object::Object >::template registerXmlWriter < object::AnyObject < ext::set < object::Object > > > ( );
 		core::xmlApi < object::Object >::template registerXmlWriter < object::AnyObject < unsigned int > > ( );
-		core::xmlApi < object::Object >::template registerXmlWriter < container::ObjectsPair < object::Object, unsigned > > ( );
 		core::xmlApi < object::Object >::template registerXmlWriter < object::AnyObject < common::ranked_symbol < object::Object, primitive::Unsigned > > > ( );
 		core::xmlApi < object::Object >::template registerXmlWriter < object::AnyObject < ext::pair < unsigned int, unsigned int > > > ( );
 		core::xmlApi < object::Object >::template registerXmlWriter < object::AnyObject < ext::pair < object::Object, object::Object > > > ( );
diff --git a/alib2data_experimental/src/label/LR0ItemsLabel.cpp b/alib2data_experimental/src/label/LR0ItemsLabel.cpp
deleted file mode 100644
index 63cd7de4c5950aa600aafc56a121cfd5fae20aff..0000000000000000000000000000000000000000
--- a/alib2data_experimental/src/label/LR0ItemsLabel.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * LR0ItemsLabel.cpp
- *
- *  Created on: 29. 4. 2016
- *      Author: Martin Kocicka
- */
-
-#include "LR0ItemsLabel.h"
-
-#include <object/Object.h>
-#include <object/UniqueObject.h>
-
-#include <registration/ValuePrinterRegistration.hpp>
-
-namespace label {
-
-LR0ItemsLabel::LR0ItemsLabel ( grammar::parsing::LR0Items items ) : m_items ( items ) {
-}
-
-LR0ItemsLabel::LR0ItemsLabel ( ) {
-}
-
-LabelBase* LR0ItemsLabel::clone ( ) const & {
-	return new LR0ItemsLabel ( *this );
-}
-
-LabelBase* LR0ItemsLabel::clone ( ) && {
-	return new LR0ItemsLabel ( std::move ( *this ) );
-}
-
-bool LR0ItemsLabel::operator < ( const LR0ItemsLabel & other ) const {
-	return this->compare(other) < 0;
-}
-
-int LR0ItemsLabel::compare ( const LR0ItemsLabel & other ) const {
-	if ( m_items < other.m_items ) {
-		return -1;
-	} else if ( m_items > other.m_items ) {
-		return 1;
-	} else {
-		return 0;
-	}
-}
-
-void LR0ItemsLabel::operator>>(std::ostream & out) const {
-	out << "(LR0ItemsLabel " << m_items << ")";
-}
-
-LR0ItemsLabel::operator std::string ( ) const {
-	std::stringstream ss;
-	ss << *this;
-	return ss.str ( );
-}
-
-object::ObjectBase* LR0ItemsLabel::inc ( ) && {
-	return new object::UniqueObject ( object::Object ( std::move ( *this ) ), primitive::Integer ( 0 ) );
-}
-
-} /* namespace label */
-
-namespace {
-
-static auto valuePrinter = registration::ValuePrinterRegister < label::LR0ItemsLabel > ( );
-
-} /* namespace */
diff --git a/alib2data_experimental/src/label/LR0ItemsLabel.h b/alib2data_experimental/src/label/LR0ItemsLabel.h
deleted file mode 100644
index 52311c976fd3848dd7e149bb8c3975c28f0e110c..0000000000000000000000000000000000000000
--- a/alib2data_experimental/src/label/LR0ItemsLabel.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * LR0ItemsLabel.h
- *
- *  Created on: 29. 4. 2016
- *      Author: Martin Kocicka
- */
-
-#ifndef LR0ITEMS_LABEL_H_
-#define LR0ITEMS_LABEL_H_
-
-#include <label/LabelBase.h>
-#include <grammar/parsing/LRParserTypes.h>
-
-namespace label {
-
-/**
- * Represents symbol in an alphabet.
- */
-class LR0ItemsLabel final : public LabelBase {
-protected:
-	grammar::parsing::LR0Items m_items;
-
-public:
-	/**
-	 * Creates new symbol with given name.
-	 * @param symbol name of the symbol
-	 */
-	explicit LR0ItemsLabel ( grammar::parsing::LR0Items items );
-
-	/**
-	 * Creates new symbol with given name.
-	 * @param symbol name of the symbol
-	 */
-	explicit LR0ItemsLabel ( );
-
-	virtual LabelBase * clone ( ) const &;
-
-	virtual LabelBase * clone ( ) &&;
-
-	const grammar::parsing::LR0Items & getItems ( ) const {
-		return m_items;
-	}
-
-	grammar::parsing::LR0Items & getItems ( ) {
-		return m_items;
-	}
-
-	virtual int compare ( const ObjectBase & other ) const {
-		if ( ext::type_index ( typeid ( * this ) ) == ext::type_index ( typeid ( other ) ) ) return this->compare ( ( decltype ( * this ) )other );
-
-		return ext::type_index ( typeid ( * this ) ) - ext::type_index ( typeid ( other ) );
-	}
-
-	virtual int compare ( const LR0ItemsLabel & other ) const;
-
-	bool operator < (const LR0ItemsLabel& other) const;
-
-	virtual void operator >>( std::ostream & ) const;
-
-	virtual explicit operator std::string ( ) const;
-
-	virtual object::ObjectBase * inc ( ) &&;
-};
-
-} /* namespace label */
-
-#endif /* LR0ITEMS_LABEL_H_ */
diff --git a/alib2data_experimental/src/label/xml/LR0ItemsLabel.cpp b/alib2data_experimental/src/label/xml/LR0ItemsLabel.cpp
deleted file mode 100644
index d038fa53e5e4bba03697123e80dbb38758e840e0..0000000000000000000000000000000000000000
--- a/alib2data_experimental/src/label/xml/LR0ItemsLabel.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * LR0ItemsLabel.cpp
- *
- *  Created on: 29. 4. 2016
- *      Author: Martin Kocicka
- */
-
-#include "LR0ItemsLabel.h"
-#include <label/Label.h>
-#include <object/Object.h>
-
-#include <container/ObjectsMap.h>
-#include <container/ObjectsSet.h>
-#include <container/ObjectsVector.h>
-#include <primitive/Unsigned.h>
-
-#include <container/xml/ObjectsMap.h>
-#include <container/xml/ObjectsSet.h>
-#include <container/xml/ObjectsVector.h>
-#include <container/xml/ObjectsVariant.h>
-#include <primitive/xml/Unsigned.h>
-
-#include <registration/XmlRegistration.hpp>
-
-namespace core {
-
-label::LR0ItemsLabel xmlApi < label::LR0ItemsLabel >::parse ( ext::deque < sax::Token >::iterator & input ) {
-	sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::START_ELEMENT, xmlTagName() );
-	label::LR0ItemsLabel data ( core::xmlApi < grammar::parsing::LR0Items > ::parse ( input ) );
-	sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::END_ELEMENT, xmlTagName() );
-	return data;
-}
-
-bool xmlApi < label::LR0ItemsLabel >::first ( const ext::deque < sax::Token >::const_iterator & input ) {
-	return sax::FromXMLParserHelper::isToken ( input, sax::Token::TokenType::START_ELEMENT, xmlTagName ( ) );
-}
-
-const std::string & xmlApi < label::LR0ItemsLabel >::xmlTagName ( ) {
-	static std::string xmlTagName = "LR0ItemsLabel";
-
-	return xmlTagName;
-}
-
-void xmlApi < label::LR0ItemsLabel >::compose ( ext::deque < sax::Token > & output, const label::LR0ItemsLabel & label ) {
-	output.emplace_back ( xmlTagName(), sax::Token::TokenType::START_ELEMENT );
-	core::xmlApi < grammar::parsing::LR0Items > ::compose ( output, label.getItems ( ) );
-	output.emplace_back ( xmlTagName(), sax::Token::TokenType::END_ELEMENT );
-}
-
-} /* namespace core */
-
-namespace {
-
-static auto xmlWrite = registration::XmlWriterRegister < label::LR0ItemsLabel > ( );
-static auto xmlRead = registration::XmlReaderRegister < label::LR0ItemsLabel > ( );
-
-static auto xmlGroup1 = registration::XmlRegisterTypeInGroup < label::Label, label::LR0ItemsLabel > ( );
-static auto xmlGroup2 = registration::XmlRegisterTypeInGroup < object::Object, label::LR0ItemsLabel > ( );
-
-} /* namespace */
diff --git a/alib2data_experimental/src/label/xml/LR0ItemsLabel.h b/alib2data_experimental/src/label/xml/LR0ItemsLabel.h
deleted file mode 100644
index 6a0102da1039302fc0d30d6d067d1a1f11aec74f..0000000000000000000000000000000000000000
--- a/alib2data_experimental/src/label/xml/LR0ItemsLabel.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * LR0ItemsLabel.h
- *
- *  Created on: Apr 10, 2013
- *      Author: Stepan Plachy
- */
-
-#ifndef _XML_LR0ITEMS_LABEL_H_
-#define _XML_LR0ITEMS_LABEL_H_
-
-#include <label/LR0ItemsLabel.h>
-#include <core/xmlApi.hpp>
-
-namespace core {
-
-template < >
-struct xmlApi < label::LR0ItemsLabel > {
-	static label::LR0ItemsLabel parse ( ext::deque < sax::Token >::iterator & input );
-	static bool first ( const ext::deque < sax::Token >::const_iterator & input );
-	static const std::string & xmlTagName ( );
-	static void compose ( ext::deque < sax::Token > & output, const label::LR0ItemsLabel & data );
-};
-
-} /* namespace core */
-
-#endif /* _XML_LR0ITEMS_LABEL_H_ */