diff --git a/js4g/StackMachine.cc b/js4g/StackMachine.cc
index 8a36414..14ae3c5 100644
--- a/js4g/StackMachine.cc
+++ b/js4g/StackMachine.cc
@@ -7,6 +7,7 @@ static_assert( __cplusplus >= 2023'02 );
 namespace
 {
 	using namespace std::literals::string_literals;
+	using namespace std::literals::string_view_literals;
 
 	namespace C
 	{
@@ -79,7 +80,7 @@ namespace Dillo::Hydrogen::JavaScriptForge	::detail::  StackMachine_m
 
 		if( false );
 		else if( word.empty() );
-		else if( word == "}" )
+		else if( word == "}"sv )
 		{
 			if( not definition.has_value() )
 			{
@@ -96,11 +97,11 @@ namespace Dillo::Hydrogen::JavaScriptForge	::detail::  StackMachine_m
 			if( C::debug ) std::cerr << "Adding word: " << word << " to function definition: " << definition.value() << std::endl;
 			words[ definition.value() ].emplace_back( word );
 		}
-		else if( inConditional and word == "@else" and currentState != Else )
+		else if( inConditional and word == "@else"sv and currentState != Else )
 		{
 			currentState= Else;
 		}
-		else if( inConditional and word == "@endif" )
+		else if( inConditional and word == "@endif"sv )
 		{
 			conditionals.pop_back();
 			currentState= resumeConditionals.back();
@@ -108,7 +109,7 @@ namespace Dillo::Hydrogen::JavaScriptForge	::detail::  StackMachine_m
 		}
 		else if( inConditional and currentState != conditionals.back() )
 		{
-			if( word == "@if" )
+			if( word == "@if"sv )
 			{
 				conditionals.push_back( Skipped );
 				resumeConditionals.push_back( currentState );
@@ -116,83 +117,83 @@ namespace Dillo::Hydrogen::JavaScriptForge	::detail::  StackMachine_m
 			}
 			else ; // We skip the statement.
 		}
-		else if( word == "@else" )
+		else if( word == "@else"sv )
 		{
 			throw std::runtime_error{ "Syntax error: unexpected `@else`" };
 		}
-		else if( word == "@endif" )
+		else if( word == "@endif"sv )
 		{
 			throw std::runtime_error{ "Syntax error: unexpected `@endif`" };
 		}
-		else if( word == "@dup" )
+		else if( word == "@dup"sv )
 		{
 			auto val= peek();
 			push( std::move( val ) );
 		}
-		else if( word == "@swap" )
+		else if( word == "@swap"sv )
 		{
 			auto a= pop();
 			auto b= pop();
 			push( std::move( a ) );
 			push( std::move( b ) );
 		}
-		else if( word == "@drop" )
+		else if( word == "@drop"sv )
 		{
 			std::ignore= pop();
 		}
-		else if( word == "@not" )
+		else if( word == "@not"sv )
 		{
 			auto val= pop< Integer >();
 			push( val == 0 ? 1 : 0 );
 		}
-		else if( word == "@i_inc" )
+		else if( word == "@i_inc"sv )
 		{
 			push( pop< Integer >() + 1 );
 		}
-		else if( word == "@i_dec" )
+		else if( word == "@i_dec"sv )
 		{
 			push( pop< Integer >() - 1 );
 		}
-		else if( word == "@i_add" )
+		else if( word == "@i_add"sv )
 		{
 			const auto lhs= pop< Integer >();
 			const auto rhs= pop< Integer >();
 
 			push( lhs + rhs );
 		}
-		else if( word == "@i_sub" )
+		else if( word == "@i_sub"sv )
 		{
 			const auto lhs= pop< Integer >();
 			const auto rhs= pop< Integer >();
 
 			push( lhs - rhs );
 		}
-		else if( word == "@i_mul" )
+		else if( word == "@i_mul"sv )
 		{
 			const auto lhs= pop< Integer >();
 			const auto rhs= pop< Integer >();
 
 			push( lhs * rhs );
 		}
-		else if( word == "@i_div" )
+		else if( word == "@i_div"sv )
 		{
 			const auto lhs= pop< Integer >();
 			const auto rhs= pop< Integer >();
 
 			push( lhs / rhs );
 		}
-		else if( word == "@print" )
+		else if( word == "@print"sv )
 		{
 			output << pop< std::string >() << std::endl;
 		}
-		else if( word == "@if" )
+		else if( word == "@if"sv )
 		{
 			const auto val= pop< Integer >();
 			conditionals.push_back( val ? If : Else );
 			resumeConditionals.push_back( currentState );
 			currentState= If;
 		}
-		else if( word == "{" )
+		else if( word == "{"sv )
 		{
 			if( definition.has_value() ) throw std::runtime_error{ "Nested definitions not supported." };
 
@@ -238,7 +239,7 @@ namespace Dillo::Hydrogen::JavaScriptForge	::detail::  StackMachine_m
 		return rv;
 	}
 
-	const std::variant< std::string, StackMachine::Integer > &
+	std::variant< std::string, StackMachine::Integer > &
 	StackMachine::peek()
 	{
 		if( stack.empty() ) throw std::runtime_error{ "FATAL: No more elements in stack." };