diff --git a/alib2data/src/rte/common/RTEFromXMLParser.cpp b/alib2data/src/rte/common/RTEFromXMLParser.cpp
index 118259457e322335eb711013650e483a6bcdcf1c..9254a8615f04f11291b3ad37699d8cdb20d75eda 100644
--- a/alib2data/src/rte/common/RTEFromXMLParser.cpp
+++ b/alib2data/src/rte/common/RTEFromXMLParser.cpp
@@ -67,7 +67,6 @@ std::rvalue_ref < FormalRTEAlternation > RTEFromXMLParser::parseFormalRTEAlterna
 std::rvalue_ref < FormalRTESubstitution > RTEFromXMLParser::parseFormalRTESubstitution ( std::deque < sax::Token >::iterator & input ) {
 	sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::START_ELEMENT, "substitution" );
 
-	 // TODO: Check alphabet membership
 	std::rvalue_ref < FormalRTESymbolSubst > ssymb ( new FormalRTESymbolSubst ( alib::xmlApi < alphabet::RankedSymbol >::parse ( input ) ) );
 	std::rvalue_ref < FormalRTEElement > element1 = parseFormalRTEElement ( input );
 	std::rvalue_ref < FormalRTEElement > element2 = parseFormalRTEElement ( input );
@@ -81,7 +80,6 @@ std::rvalue_ref < FormalRTESubstitution > RTEFromXMLParser::parseFormalRTESubsti
 std::rvalue_ref < FormalRTEIteration > RTEFromXMLParser::parseFormalRTEIteration ( std::deque < sax::Token >::iterator & input ) {
 	sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::START_ELEMENT, "iteration" );
 
-	 // TODO: Check alphabet membership
 	std::rvalue_ref < FormalRTESymbolSubst > ssymb ( new FormalRTESymbolSubst ( alib::xmlApi < alphabet::RankedSymbol >::parse ( input ) ) );
 	std::rvalue_ref < FormalRTEElement > element = parseFormalRTEElement ( input );
 	std::rvalue_ref < FormalRTEIteration > iteration ( new FormalRTEIteration ( std::move ( element ), std::move ( ssymb ) ) );
@@ -114,7 +112,6 @@ std::rvalue_ref < FormalRTESymbolAlphabet > RTEFromXMLParser::parseFormalRTESymb
 	alphabet::RankedSymbol symbol = alib::xmlApi < alphabet::RankedSymbol >::parse ( input );
 	std::vector < std::rvalue_ref < FormalRTESymbol > > elements;
 
-	 // TODO: Check alphabet membership
 	std::rvalue_ref < FormalRTESymbolAlphabet > ret ( new FormalRTESymbolAlphabet ( symbol ) );
 
 	while ( sax::FromXMLParserHelper::isTokenType ( input, sax::Token::TokenType::START_ELEMENT ) )
@@ -132,7 +129,6 @@ std::rvalue_ref < FormalRTESymbolSubst > RTEFromXMLParser::parseFormalRTESymbolS
 	sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::START_ELEMENT, "substSymbol" );
 	alphabet::RankedSymbol symbol = alib::xmlApi < alphabet::RankedSymbol >::parse ( input );
 
-	 // TODO: Check alphabet membership
 	std::rvalue_ref < FormalRTESymbolSubst > ret ( new FormalRTESymbolSubst ( symbol ) );
 
 	sax::FromXMLParserHelper::popToken ( input, sax::Token::TokenType::END_ELEMENT, "substSymbol" );