diff --git a/include/app/ParamWidget.hpp b/include/app/ParamWidget.hpp
index eaa2ce9d..a7b6afc5 100644
--- a/include/app/ParamWidget.hpp
+++ b/include/app/ParamWidget.hpp
@@ -13,7 +13,7 @@ namespace app {
 /** Manages an engine::Param on a ModuleWidget. */
 struct ParamWidget : widget::OpaqueWidget {
 	engine::Module* module = NULL;
-	int paramId = 0;
+	int paramId;
 
 	ui::Tooltip* tooltip = NULL;
 	/** For triggering the Change event. `*/
diff --git a/include/app/PortWidget.hpp b/include/app/PortWidget.hpp
index e961847d..82f039d5 100644
--- a/include/app/PortWidget.hpp
+++ b/include/app/PortWidget.hpp
@@ -14,8 +14,8 @@ namespace app {
 /** Manages an engine::Port on a ModuleWidget. */
 struct PortWidget : widget::OpaqueWidget {
 	engine::Module* module = NULL;
-	engine::Port::Type type = engine::Port::INPUT;
-	int portId = 0;
+	engine::Port::Type type;
+	int portId;
 
 	ui::Tooltip* tooltip = NULL;
 	bool hovered = false;
diff --git a/include/engine/Module.hpp b/include/engine/Module.hpp
index c1146da9..90888848 100644
--- a/include/engine/Module.hpp
+++ b/include/engine/Module.hpp
@@ -24,7 +24,8 @@ namespace engine {
 
 /** DSP processor instance for your module. */
 struct Module {
-	plugin::Model* model = NULL;	/** Unique ID for referring to the module in the engine.
+	plugin::Model* model = NULL;
+	/** Unique ID for referring to the module in the engine.
 	Assigned when added to the engine.
 	*/
 	int id = -1;
@@ -120,12 +121,16 @@ struct Module {
 		paramQuantities[paramId] = q;
 	}
 
+	template <class TPortInfo = PortInfo>
 	void configInput(int portId, std::string name = "") {
 		assert(portId < (int) inputs.size() && portId < (int) inputInfos.size());
 		if (inputInfos[portId])
 			delete inputInfos[portId];
 
-		PortInfo* p = new PortInfo;
+		PortInfo* p = new TPortInfo;
+		p->module = this;
+		p->type = Port::INPUT;
+		p->portId = portId;
 		if (name == "")
 			p->name = string::f("#%d", portId + 1);
 		else
@@ -133,12 +138,16 @@ struct Module {
 		inputInfos[portId] = p;
 	}
 
+	template <class TPortInfo = PortInfo>
 	void configOutput(int portId, std::string name = "") {
 		assert(portId < (int) outputs.size() && portId < (int) outputInfos.size());
 		if (outputInfos[portId])
 			delete outputInfos[portId];
 
-		PortInfo* p = new PortInfo;
+		PortInfo* p = new TPortInfo;
+		p->module = this;
+		p->type = Port::OUTPUT;
+		p->portId = portId;
 		if (name == "")
 			p->name = string::f("#%d", portId + 1);
 		else
diff --git a/include/engine/ParamQuantity.hpp b/include/engine/ParamQuantity.hpp
index 9a525a1a..662737b0 100644
--- a/include/engine/ParamQuantity.hpp
+++ b/include/engine/ParamQuantity.hpp
@@ -13,7 +13,7 @@ struct Module;
 /** A Quantity that wraps an engine::Param. */
 struct ParamQuantity : Quantity {
 	Module* module = NULL;
-	int paramId = 0;
+	int paramId;
 
 	/** The minimum allowed value. */
 	float minValue = 0.f;
diff --git a/include/engine/PortInfo.hpp b/include/engine/PortInfo.hpp
index 0c9512ae..b0752758 100644
--- a/include/engine/PortInfo.hpp
+++ b/include/engine/PortInfo.hpp
@@ -8,12 +8,20 @@ namespace engine {
 
 
 struct PortInfo {
+	Module* module = NULL;
+	Port::Type type;
+	int portId;
+
 	/** The name of the port, using sentence capitalization.
 	e.g. "Sine", "Pitch input", "Mode CV"
 	*/
 	std::string name;
 	/** An optional one-sentence description of the parameter. */
 	std::string description;
+
+	virtual ~PortInfo() {}
+	virtual std::string getName() {return name;}
+	virtual std::string getDescription() {return description;}
 };
 
 
diff --git a/src/app/PortWidget.cpp b/src/app/PortWidget.cpp
index 5ccad992..94a20f59 100644
--- a/src/app/PortWidget.cpp
+++ b/src/app/PortWidget.cpp
@@ -22,7 +22,7 @@ struct PortTooltip : ui::Tooltip {
 			// Label
 			text = (portWidget->type == engine::Port::INPUT) ? "Input" : "Output";
 			text += ": ";
-			text += portInfo->name;
+			text += portInfo->getName();
 			// Voltage, number of channels
 			int channels = port->getChannels();
 			for (int i = 0; i < channels; i++) {
@@ -33,7 +33,7 @@ struct PortTooltip : ui::Tooltip {
 				text += string::f("% .3fV", port->getVoltage(i));
 			}
 			// Description
-			std::string description = portInfo->description;
+			std::string description = portInfo->getDescription();
 			if (description != "") {
 				text += "\n";
 				text += description;
@@ -48,7 +48,7 @@ struct PortTooltip : ui::Tooltip {
 				text += "Connected to ";
 				text += otherPw->module->model->getFullName();
 				text += ": ";
-				text += otherPw->getPortInfo()->name;
+				text += otherPw->getPortInfo()->getName();
 			}
 		}
 		Tooltip::step();