diff --git a/demo.srd b/demo.srd
index 5e787a0..f62b065 100644
--- a/demo.srd
+++ b/demo.srd
@@ -152,19 +152,23 @@
 	(input dof-samples 16)
 
 	# Input overrides
-	{ NOT IMPLEMENTED
-		(ui-overrides
-			(section "Post-processing"
-				(section "Depth of Field"
-					(float dof-sharp-distance (min 0) (max 1000) (step .1))
-					(float dof-sharp-range (min 0) (max 500) (step .1))
-					(float dof-falloff (min 0) (max 500) (step .1))
-					(float dof-max-blur (min 1) (max 64) (step .1))
+	(ui-overrides
+		(section "Post-processing"
+			(section "Depth of Field"
+				(float "Sharp distance" dof-sharp-distance
+					(min 0) (max 50000) (step .1))
+				(float "Sharp range" dof-sharp-range
+					(min 0) (max 50000) (step .1))
+				(float "Falloff" dof-falloff
+					(min 0) (max 50000) (step .1))
+				(float "Maximum blur" dof-max-blur
+					(min 1) (max 64) (slider))
+				{ NOT IMPLEMENTED
 					(int dof-samples (min 1) (max 64) (step .1))
-				)
+				}
 			)
 		)
-	}
+	)
 )
 
 (fn dof-set-uniforms (prog)
diff --git a/opparser.cc b/opparser.cc
index c548209..7a83a4c 100644
--- a/opparser.cc
+++ b/opparser.cc
@@ -2,7 +2,9 @@
 #include "opast.hh"
 #include "ops.hh"
 #include "opcomp.hh"
+#include "syncoverrides.hh"
 #include <ebcl/Algorithms.hh>
+#include <ebcl/SRDParser.hh>
 
 using namespace ebcl;
 using namespace opast;
@@ -24,6 +26,7 @@ struct T_ParserImpl_
 		LOCALS ,
 		MAINOUT ,
 		ODBG ,
+		OVERRIDES ,
 		PIPELINE ,
 		PROFILE ,
 		PROGRAM ,
@@ -60,6 +63,7 @@ struct T_ParserImpl_
 		add( "sampler" , E_InstrType::SAMPLER );
 		add( "set" , E_InstrType::SET );
 		add( "texture" , E_InstrType::TEXTURE );
+		add( "ui-overrides" , E_InstrType::OVERRIDES );
 		add( "uniforms" , E_InstrType::UNIFORMS_FLT );
 		add( "uniforms-i" , E_InstrType::UNIFORMS_INT );
 		add( "use-framebuffer" , E_InstrType::USE_FRAMEBUFFER );
@@ -153,6 +157,8 @@ struct T_ParserImpl_
 	T_Array< T_SRDError >& errors;
 	T_MultiArray< uint32_t > calls;
 	T_Array< T_InstrRestriction > callInfo;
+	T_SRDParserConfig ovParserConfig;
+	T_SRDParser ovParser;
 
 	T_Visitor< A_Node > visitor{ opast::ASTVisitorBrowser };
 	T_Visitor< uint32_t , uint32_t > callGraphVisitor{
@@ -231,6 +237,7 @@ struct T_ParserImpl_
 	M_DPARSER_( Input );
 	M_DPARSER_( Locals );
 	M_DPARSER_( ODebug );
+	M_DPARSER_( Overrides );
 	M_DPARSER_( Pipeline );
 	M_DPARSER_( Profile );
 	M_DPARSER_( Program );
@@ -295,7 +302,9 @@ struct T_ParserImpl_
 inline T_ParserImpl_::T_ParserImpl_(
 		T_Array< T_SRDError >* const errors ,
 		T_OwnPtr< T_OpsParserOutput >* const output ) noexcept
-	: output( *output ) , errors( *errors )
+	: output( *output ) , errors( *errors ) ,
+		ovParserConfig( sov::GetParserConfig( ) ) ,
+		ovParser( ovParserConfig )
 { }
 
 void T_ParserImpl_::main(
@@ -1008,6 +1017,7 @@ void T_ParserImpl_::parseInstructions(
 			M_CASE_( INPUT , Input );
 			M_CASE_( LOCALS , Locals );
 			M_CASE_( ODBG , ODebug );
+			M_CASE_( OVERRIDES , Overrides );
 			M_CASE_( PIPELINE , Pipeline );
 			M_CASE_( PROFILE , Profile );
 			M_CASE_( PROGRAM , Program );
@@ -1323,6 +1333,72 @@ M_INSTR_( ODebug )
 
 /*----------------------------------------------------------------------------*/
 
+M_INSTR_( Overrides )
+{
+	if ( input.size( ) == 1 ) {
+		errors.addNew( "not enough arguments" , input[ 0 ].location( ) );
+		return;
+	}
+
+	struct T_StackEntry_ {
+		T_SRDList const* list;
+		uint32_t pos;
+
+		T_StackEntry_( T_SRDList const* list ,
+				const uint32_t pos ) noexcept
+			: list( list ) , pos( pos )
+		{}
+	};
+	T_AutoArray< T_StackEntry_ , 16 > stack;
+	T_StackEntry_ current{ &input , 1  };
+	T_SRDErrors ovParserErrors;
+	bool hadException{ false };
+	try {
+		ovParser.start( ovParserErrors );
+		while ( current.pos < current.list->size( ) || !stack.empty( ) ) {
+			if ( current.pos == current.list->size( ) ) {
+				current = stack.last( );
+				stack.removeLast( );
+
+				T_SRDToken ls{ T_SRDToken::ListEnd( ) };
+				ls.location( (*current.list)[ current.pos ].location( ) );
+				ovParser.push( ovParserErrors , std::move( ls ) );
+
+				current.pos ++;
+				continue;
+			}
+
+			auto const& src( (*current.list)[ current.pos ] );
+			if ( src.type( ) == E_SRDTokenType::LIST ) {
+				T_SRDToken ls{ T_SRDToken::ListStart( ) };
+				ls.location( src.location( ) );
+				ovParser.push( ovParserErrors , std::move( ls ) );
+				stack.add( current );
+				current = T_StackEntry_{ &src.list( ) , 0 };
+			} else {
+				ovParser.push( ovParserErrors , T_SRDToken{ src } );
+				current.pos ++;
+			}
+		}
+		ovParser.end( ovParserErrors );
+	} catch ( X_SRDErrors const& e ) {
+		hadException = true;
+	}
+
+	const auto n{ ovParserErrors.size( ) - ( hadException ? 1 : 0 ) };
+	if ( n != 0 ) {
+		for ( auto i = 0u ; i < n ; i ++ ) {
+			errors.add( ovParserErrors[ i ] );
+		}
+		if ( hadException ) {
+			errors.addNew( "too many errors in UI overrides list" ,
+					input[ 0 ].location( ) );
+		}
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+
 M_INSTR_( Pipeline )
 {
 	if ( input.size( ) < 3 ) {
diff --git a/syncoverrides.cc b/syncoverrides.cc
index 6bceb92..c90c72c 100644
--- a/syncoverrides.cc
+++ b/syncoverrides.cc
@@ -2,6 +2,8 @@
 #include "globals.hh"
 #include "syncoverrides.hh"
 
+#include <ebcl/SRDParser.hh>
+
 using namespace sov;
 
 #define M_SETOPT_( FIELD , VAR ) \
@@ -10,6 +12,211 @@ using namespace sov;
 	return true
 
 
+/*= PARSER DEFINITIONS =========================================================*/
+
+namespace {
+
+using namespace ebcl;
+using SP_Section = T_SharedPtr< T_SyncOverrideSection >;
+
+bool EnterSection_( T_SRDParserData const& data )
+{
+	*( data.targetData ) = NewShared< T_SyncOverrideSection >( (*data.input)[ 1 ].stringValue( ) );
+	return true;
+}
+
+bool ExitSection_( T_SRDParserData const& data )
+{
+	auto& section( data.currentData->value< SP_Section >( ) );
+	auto& parent( data.targetData->value< SP_Section >( ) );
+
+	if ( section->overrides.empty( ) && section->subsections.empty( ) ) {
+		T_StringBuilder sb;
+		sb << "empty section '" << section->title << "'";
+		data.errors.add( std::move( sb ) , (*data.input)[ 0 ] );
+	} else {
+		parent->subsections.add( section.makeOwned( ) );
+	}
+
+	return true;
+}
+
+/*------------------------------------------------------------------------------*/
+
+using SP_Float = T_SharedPtr< A_Float >;
+
+bool EnterFloat1_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	SP_Float ptr{ NewShared< T_Float >(
+			input[ 1 ].stringValue( ) , input[ 2 ].stringValue( ) ) };
+	*( data.targetData ) = std::move( ptr );
+	return true;
+}
+
+bool EnterFloat2_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	SP_Float ptr{ NewShared< T_Float2 >(
+			input[ 1 ].stringValue( ) , input[ 2 ].stringValue( ) ,
+			input[ 3 ].stringValue( ) ) };
+	*( data.targetData ) = std::move( ptr );
+	return true;
+}
+
+bool EnterFloat3_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	SP_Float ptr{ NewShared< T_Float3 >(
+			input[ 1 ].stringValue( ) , input[ 2 ].stringValue( ) ,
+			input[ 3 ].stringValue( ) , input[ 4 ].stringValue( ) ) };
+	*( data.targetData ) = std::move( ptr );
+	return true;
+}
+
+bool EnterFloat4_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	SP_Float ptr{ NewShared< T_Float4 >(
+			input[ 1 ].stringValue( ) , input[ 2 ].stringValue( ) ,
+			input[ 3 ].stringValue( ) , input[ 4 ].stringValue( ) ,
+			input[ 5 ].stringValue( ) ) };
+	*( data.targetData ) = std::move( ptr );
+	return true;
+}
+
+bool AddFloat_( T_SRDParserData const& data )
+{
+	auto& fl( data.currentData->value< SP_Float >( ) );
+	auto& parent( data.targetData->value< SP_Section >( ) );
+
+	if ( fl->min( ) > fl->max( ) ) {
+		data.errors.add( "invalid bounds" , (*data.input)[ 0 ] );
+	}
+	parent->overrides.add( fl.makeOwned( ) );
+	return true;
+}
+
+/*------------------------------------------------------------------------------*/
+
+bool FloatSetSlider_( T_SRDParserData const& data )
+{
+	data.currentData->value< SP_Float >( )->setSlider( );
+	return true;
+}
+
+bool FloatSetMin_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	if ( !data.currentData->value< SP_Float >( )->setMin( input[ 1 ].floatValue( ) ) ) {
+		data.errors.add( "duplicate minimal value" , (*data.input)[ 0 ] );
+	}
+	return true;
+}
+
+bool FloatSetMax_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	if ( !data.currentData->value< SP_Float >( )->setMax( input[ 1 ].floatValue( ) ) ) {
+		data.errors.add( "duplicate maximal value" , (*data.input)[ 0 ] );
+	}
+	return true;
+}
+
+bool FloatSetStep_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	const auto v( input[ 1 ].floatValue( ) );
+	if ( v <= 0 ) {
+		data.errors.add( "invalid step value" , (*data.input)[ 1 ] );
+	} else if ( !data.currentData->value< SP_Float >( )->setStep( v ) ) {
+		data.errors.add( "duplicate step value" , (*data.input)[ 0 ] );
+	}
+	return true;
+}
+
+bool FloatSetPower_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	const auto v( input[ 1 ].floatValue( ) );
+	if ( v <= 0 ) {
+		data.errors.add( "invalid power value" , (*data.input)[ 1 ] );
+	} else if ( !data.currentData->value< SP_Float >( )->setPower( v ) ) {
+		data.errors.add( "duplicate power value" , (*data.input)[ 0 ] );
+	}
+	return true;
+}
+
+bool FloatSetDecimals_( T_SRDParserData const& data )
+{
+	auto const& input( *( data.input ) );
+	const auto v( input[ 1 ].longValue( ) );
+	if ( v < 0 || v > 10 ) {
+		data.errors.add( "invalid decimals value" , (*data.input)[ 1 ] );
+	} else if ( !data.currentData->value< SP_Float >( )->setDecimals( v ) ) {
+		data.errors.add( "duplicate decimals value" , (*data.input)[ 0 ] );
+	}
+	return true;
+}
+
+} // namespace
+
+/*------------------------------------------------------------------------------*/
+
+ebcl::T_SRDParserConfig sov::GetParserConfig( )
+{
+	using namespace ebcl;
+	using namespace ebcl::SRD;
+	T_SRDParserDefs defs( "root" );
+
+	defs << OnStart( []( T_SRDParserData const& data ) -> bool {
+		*( data.currentData ) = NewShared< T_SyncOverrideSection >( "*" );
+		return true;
+	} );
+
+	defs.context( "root" )
+		<< ( Rule() << "section" << Text( ) << EnterContext( "section" )
+				<< OnEnter( EnterSection_ )
+				<< OnExit( ExitSection_ ) )
+	;
+	defs.context( "section" )
+		<< ( Rule() << "section" << Text( ) << EnterContext( "section" ) )
+		// Floating point controls
+		<< ( Rule() << "float" << Text( ) << Word( )
+				<< EnterContext( "float" )
+				<< OnEnter( EnterFloat1_ )
+				<< OnExit( AddFloat_ ) )
+		<< ( Rule() << "float2" << Text( )
+				<< ( SRD::Times( 2 ) << Word( ) )
+				<< EnterContext( "float" )
+				<< OnEnter( EnterFloat2_ )
+				<< OnExit( AddFloat_ ) )
+		<< ( Rule() << "float3" << Text( )
+				<< ( SRD::Times( 3 ) << Word( ) )
+				<< EnterContext( "float" )
+				<< OnEnter( EnterFloat3_ )
+				<< OnExit( AddFloat_ ) )
+		<< ( Rule() << "float4" << Text( )
+				<< ( SRD::Times( 4 ) << Word( ) )
+				<< EnterContext( "float" )
+				<< OnEnter( EnterFloat4_ )
+				<< OnExit( AddFloat_ ) )
+	;
+
+	// Floating point control parameters
+	defs.context( "float" )
+		<< ( Rule() << "slider" << FloatSetSlider_ )
+		<< ( Rule() << "min" << Numeric() << FloatSetMin_ )
+		<< ( Rule() << "max" << Numeric() << FloatSetMax_ )
+		<< ( Rule() << "step" << Numeric() << FloatSetStep_ )
+		<< ( Rule() << "power" << Numeric() << FloatSetPower_ )
+		<< ( Rule() << "decimals" << Integer() << FloatSetDecimals_ )
+	;
+
+	return T_SRDParserConfig{ defs };
+}
+
+
 /*= A_Float ====================================================================*/
 
 bool A_Float::setMin(
diff --git a/syncoverrides.hh b/syncoverrides.hh
index 0cf134e..b977e7d 100644
--- a/syncoverrides.hh
+++ b/syncoverrides.hh
@@ -88,5 +88,10 @@ class T_Float4 : public A_Float
 };
 
 
+/*= PARSER CONFIGURATION =======================================================*/
+
+// Get a parser configuration that will be able to parse UI override definitions.
+ebcl::T_SRDParserConfig GetParserConfig( );
+
 
 } // namespace