diff --git a/3rdparty/ebcl b/3rdparty/ebcl
index 5db2619..86a3fe3 160000
--- a/3rdparty/ebcl
+++ b/3rdparty/ebcl
@@ -1 +1 @@
-Subproject commit 5db261909a4883faf80a89a3211a11c9c5dfd7f0
+Subproject commit 86a3fe34b4d0361ff1deb307f211d7bbdb1f14fa
diff --git a/c-syncedit.cc b/c-syncedit.cc
index 063570d..3b80fbd 100644
--- a/c-syncedit.cc
+++ b/c-syncedit.cc
@@ -301,26 +301,43 @@ void SyncEditor::AppendSegment(
 /*----------------------------------------------------------------------------*/
 
 void SyncEditor::DeleteSegment(
-		T_String const& id ,
+		T_SyncTrackId const& id ,
 		const uint32_t segmentIndex ) noexcept
 {
 	auto& sync{ Common::Sync( ) };
 
-	auto const* const curve{ sync.getCurve( id ) };
-	if ( !curve || segmentIndex >= curve->segments.size( ) ) {
+	auto const* const ovr{ id.isOverride ? sync.getOverride( id.id ) : nullptr };
+	if ( id.isOverride && !ovr ) {
 		return;
 	}
 
+	const auto nc{ ovr ? ovr->inputNames( ).size( ) : 1 };
+	T_SyncCurve const* curves[ nc ];
+	if ( ovr ) {
+		for ( auto i = 0u ; i < nc ; i ++ ) {
+			curves[ i ] = sync.getCurve( ovr->inputNames( )[ i ] );
+		}
+	} else {
+		curves[ 0 ] = sync.getCurve( id.id );
+	}
+	for ( auto i = 0u ; i < nc ; i ++ ) {
+		if ( !curves[ i ] || segmentIndex >= curves[ i ]->segments.size( ) ) {
+			return;
+		}
+	}
+
 	auto& undo{ dynamic_cast< T_UndoSyncChanges& >(
 			Common::Undo( ).add< T_UndoSyncChanges >( ) ) };
-	if ( curve->segments.size( ) == 1 ) {
-		undo.curveDeletion( *curve );
-		sync.removeCurve( id );
-	} else {
-		auto nCurve{ *curve };
-		nCurve.segments.remove( segmentIndex );
-		undo.curveReplacement( *curve , nCurve );
-		sync.setCurve( std::move( nCurve ) );
+	for ( auto i = 0u ; i < nc ; i ++ ) {
+		if ( curves[ i ]->segments.size( ) == 1 ) {
+			undo.curveDeletion( *curves[ i ] );
+			sync.removeCurve( curves[ i ]->name );
+		} else {
+			auto nCurve{ *curves[ i ] };
+			nCurve.segments.remove( segmentIndex );
+			undo.curveReplacement( *curves[ i ] , nCurve );
+			sync.setCurve( std::move( nCurve ) );
+		}
 	}
 }
 
@@ -352,6 +369,46 @@ void SyncEditor::SetSegmentType(
 
 /*----------------------------------------------------------------------------*/
 
+void SyncEditor::SetSegmentTypes(
+		A_SyncOverride const& ovr ,
+		const uint32_t segmentIndex ,
+		const T_SyncSegment::E_SegmentType newType ) noexcept
+{
+	auto& sync{ Common::Sync( ) };
+	auto const& iNames{ ovr.inputNames( ) };
+	const auto nc{ iNames.size( ) };
+	{
+		auto nSame{ 0u };
+		for ( auto i = 0u ; i < nc ; i ++ ) {
+			auto const* const c{ sync.getCurve( iNames[ i ] ) };
+			assert( c );
+			assert( segmentIndex < c->segments.size( ) );
+			T_SyncSegment const& iSegment{ c->segments[ segmentIndex ] };
+			if ( iSegment.type == newType ) {
+				nSame ++;
+			}
+		}
+		if ( nSame == nc ) {
+			return;
+		}
+	}
+
+	auto& undo{ dynamic_cast< T_UndoSyncChanges& >(
+			Common::Undo( ).add< T_UndoSyncChanges >( ) ) };
+	for ( auto i = 0u ; i < nc ; i ++ ) {
+		auto const* const c{ sync.getCurve( iNames[ i ] ) };
+		if ( c->segments[ segmentIndex ].type == newType ) {
+			continue;
+		}
+		T_SyncCurve copy{ *c };
+		copy.segments[ segmentIndex ].type = newType;
+		undo.curveReplacement( *c , copy );
+		sync.setCurve( std::move( copy ) );
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+
 void SyncEditor::InsertPoint(
 		T_String const& id ,
 		const uint32_t segmentIndex ,
diff --git a/c-syncedit.hh b/c-syncedit.hh
index b8bf235..9e6427c 100644
--- a/c-syncedit.hh
+++ b/c-syncedit.hh
@@ -134,7 +134,7 @@ struct SyncEditor final
 
 	// Delete a segment from a curve.
 	static void DeleteSegment(
-			T_String const& id ,
+			T_SyncTrackId const& id ,
 			uint32_t segmentIndex ) noexcept;
 
 	// Change the type of a segment in a curve.
@@ -143,6 +143,12 @@ struct SyncEditor final
 			uint32_t segmentIndex ,
 			T_SyncSegment::E_SegmentType newType ) noexcept;
 
+	// Change the type of a segment for all inputs covered by an override.
+	static void SetSegmentTypes(
+			A_SyncOverride const& ovr ,
+			uint32_t segmentIndex ,
+			T_SyncSegment::E_SegmentType newType ) noexcept;
+
 	//----------------------------------------------------------------------
 
 	// Insert a point in a segment. The pointIndex parameter indicates the
diff --git a/ui-sequencer.cc b/ui-sequencer.cc
index 11e191f..e5ee7be 100644
--- a/ui-sequencer.cc
+++ b/ui-sequencer.cc
@@ -1128,6 +1128,28 @@ void T_SyncViewImpl_::displayTooltips(
 		<< '\n';
 	if ( mp.type == E_MousePosType::TRACK ) {
 		stringBuffer << "No segment";
+	} else if ( ovr ) {
+		if ( mp.type == E_MousePosType::SEGMENT ) {
+			int cType{ -1 };
+			for ( auto i = 0u ; i < ovr->inputNames( ).size( ) ; i ++ ) {
+				auto const& iName{ ovr->inputNames( )[ i ] };
+				auto const* const c{ sync.getCurve( iName ) };
+				if ( i == 0 ) {
+					cType = c->segments[ seg->seg ].type;
+				} else if ( cType != c->segments[ seg->seg ].type ) {
+					cType = -1;
+				}
+			}
+			if ( cType == -1 ) {
+				stringBuffer << "Various segment types";
+			} else {
+				stringBuffer << "Segment type: "
+					<< T_SyncSegment::E_SegmentType( cType );
+			}
+		} else {
+			stringBuffer << "Point index " << point->index;
+		}
+
 	} else {
 		auto const& s{ curve->segments[ seg->seg ] };
 		if ( mp.type == E_MousePosType::SEGMENT ) {
@@ -1138,7 +1160,7 @@ void T_SyncViewImpl_::displayTooltips(
 	}
 	stringBuffer << "\nTime: " << buffer << '\n';
 	if ( track.id.isOverride ) {
-		stringBuffer << "Input values:";
+		stringBuffer << "\nInput values:";
 		for ( auto i = 0u ; i < ovr->inputNames( ).size( ) ; i ++ ) {
 			auto const& iName{ ovr->inputNames( )[ i ] };
 			auto const* const c{ sync.getCurve( iName ) };
@@ -1686,28 +1708,71 @@ void T_SyncViewImpl_::displaySegmentWindow( ) noexcept
 	SameLine( 110 );
 	Text( "%.3f seconds" , tDuration );
 
-	bool change;
-	int tp;
-	if ( !ovr ) {
-		Separator( );
+	// Generate the combo box's data
+	static constexpr T_SyncSegment::E_SegmentType types[] = {
+		T_SyncSegment::LINEAR , T_SyncSegment::RAMP , T_SyncSegment::SMOOTH
+	};
+	stringBuffer.clear( ) << "various types" << '\0';
+	const auto ts{ stringBuffer.size( ) };
+	for ( auto t : types ) {
+		stringBuffer << t << '\0';
+	}
+	stringBuffer << '\0';
 
-		// Generate the combo box's data
-		static constexpr T_SyncSegment::E_SegmentType types[] = {
-			T_SyncSegment::LINEAR , T_SyncSegment::RAMP , T_SyncSegment::SMOOTH
-		};
-		stringBuffer.clear( );
-		for ( auto t : types ) {
-			stringBuffer << t << '\0';
-		}
-		stringBuffer << '\0';
+	// Display segment type selectors
+	auto const nc{ ovr ? ovr->inputNames( ).size( ) : 1u };
+	int change;
+	int sTypes[ nc + 1 ];
+	Separator( );
+	if ( !ovr ) {
 		Text( "Type:" );
 		SameLine( 110 );
 		PushItemWidth( -1 );
-		tp = int( segment.type );
-		change = Combo( "##type" , &tp , stringBuffer.data( ) );
+		sTypes[ 0 ] = int( segment.type );
+		change = Combo( "##type" , &sTypes[ 0 ] , stringBuffer.data( ) + ts ) ? 0 : -1;
 		PopItemWidth( );
+	} else if ( TreeNode( "Segment types" ) ) {
+		change = -1;
+		const uint32_t sblen{ stringBuffer.size( ) };
+		PushItemWidth( -1 );
+		int common{ -1 };
+		for ( auto i = 0u ; i < nc ; i ++ ) {
+			auto const& iName{ ovr->inputNames( )[ i ] };
+			sTypes[ i ] = int( sync.getCurve( iName )->segments[ sid ].type );
+			if ( i == 0 ) {
+				common = sTypes[ i ];
+			} else if ( common != sTypes[ i ] ) {
+				common = -1;
+			}
+
+			stringBuffer << iName << '\0';
+			Text( "%s" , stringBuffer.data( ) + sblen );
+			SameLine( 200 );
+
+			stringBuffer.truncate( sblen ) << "##type" << i << '\0';
+			if ( Combo( stringBuffer.data( ) + sblen , &sTypes[ i ] ,
+						stringBuffer.data( ) + ts ) ) {
+				change = i;
+			}
+			stringBuffer.truncate( sblen );
+		}
+		Separator( );
+
+		const auto cOffset{ common == -1 ? 0 : ts };
+		if ( common == -1 ) {
+			common ++;
+		}
+		Text( "All inputs" );
+		SameLine( 200 );
+		if ( Combo( "##type-all" , &common , stringBuffer.data( ) + cOffset ) ) {
+			sTypes[ nc ] = common - ( cOffset == 0 ? 1 : 0 );
+			change = nc;
+		}
+
+		PopItemWidth( );
+		TreePop( );
 	} else {
-		change = false;
+		change = -1;
 	}
 
 	Separator( );
@@ -1743,14 +1808,17 @@ void T_SyncViewImpl_::displaySegmentWindow( ) noexcept
 		} else {
 			selSegment = decltype( selSegment ){};
 		}
-		SyncEditor::DeleteSegment( selId->id , sid );
-#warning blah
+		SyncEditor::DeleteSegment( *selId , sid );
 	}
 
-	if ( change ) {
-		SyncEditor::SetSegmentType( *curve , sid ,
-				T_SyncSegment::E_SegmentType( tp ) );
-#warning blah
+	if ( change >= 0 && change < int32_t( nc ) ) {
+		SyncEditor::SetSegmentType(
+				*( ovr ? sync.getCurve( ovr->inputNames( )[ change ] ) : curve ) ,
+				sid , T_SyncSegment::E_SegmentType( sTypes[ change ] ) );
+	} else if ( change == int32_t( nc ) && sTypes[ nc ] != -1 ) {
+		assert( ovr );
+		SyncEditor::SetSegmentTypes( *ovr , sid ,
+				T_SyncSegment::E_SegmentType( sTypes[ nc ] ) );
 	}
 
 	End( );