diff --git a/MVMCoreUI.xcodeproj/project.pbxproj b/MVMCoreUI.xcodeproj/project.pbxproj
index 9ba02cb8..664974b2 100644
--- a/MVMCoreUI.xcodeproj/project.pbxproj
+++ b/MVMCoreUI.xcodeproj/project.pbxproj
@@ -123,6 +123,8 @@
 		0AE98BB523FF18D2004C5109 /* Arrow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0AE98BB423FF18D2004C5109 /* Arrow.swift */; };
 		0AE98BB723FF18E9004C5109 /* ArrowModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0AE98BB623FF18E9004C5109 /* ArrowModel.swift */; };
 		279B1569242BBC2F00921D6C /* ActionModelAdapter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 279B1568242BBC2F00921D6C /* ActionModelAdapter.swift */; };
+		27F6B08826051831008529AA /* MoleculeTreeTraversalProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F6B08726051831008529AA /* MoleculeTreeTraversalProtocol.swift */; };
+		27F6B08C26052AFF008529AA /* ParentMoleculeModelProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F6B08B26052AFF008529AA /* ParentMoleculeModelProtocol.swift */; };
 		27F973532466074500CAB5C5 /* PageBehavior.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F973522466074500CAB5C5 /* PageBehavior.swift */; };
 		27F9736A246750BE00CAB5C5 /* ScreenBrightnessModifierBehavior.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F97369246750BE00CAB5C5 /* ScreenBrightnessModifierBehavior.swift */; };
 		31BE15CB23D8924D00452370 /* CheckboxLabelModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 31BE15C923D8924C00452370 /* CheckboxLabelModel.swift */; };
@@ -679,6 +681,8 @@
 		0AE98BB423FF18D2004C5109 /* Arrow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Arrow.swift; sourceTree = "<group>"; };
 		0AE98BB623FF18E9004C5109 /* ArrowModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ArrowModel.swift; sourceTree = "<group>"; };
 		279B1568242BBC2F00921D6C /* ActionModelAdapter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ActionModelAdapter.swift; sourceTree = "<group>"; };
+		27F6B08726051831008529AA /* MoleculeTreeTraversalProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MoleculeTreeTraversalProtocol.swift; sourceTree = "<group>"; };
+		27F6B08B26052AFF008529AA /* ParentMoleculeModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ParentMoleculeModelProtocol.swift; sourceTree = "<group>"; };
 		27F973522466074500CAB5C5 /* PageBehavior.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PageBehavior.swift; sourceTree = "<group>"; };
 		27F97369246750BE00CAB5C5 /* ScreenBrightnessModifierBehavior.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScreenBrightnessModifierBehavior.swift; sourceTree = "<group>"; };
 		31BE15C923D8924C00452370 /* CheckboxLabelModel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CheckboxLabelModel.swift; sourceTree = "<group>"; };
@@ -1147,6 +1151,7 @@
 				D2092354244FA0FD0044AD09 /* ThreeLayerTemplateModelProtocol.swift */,
 				D2509ED02472ED9B001BFB9D /* NavigationItemModelProtocol.swift */,
 				D28BA74C248589C800B75CB8 /* TabPageModelProtocol.swift */,
+				27F6B08B26052AFF008529AA /* ParentMoleculeModelProtocol.swift */,
 			);
 			path = ModelProtocols;
 			sourceTree = "<group>";
@@ -2275,6 +2280,7 @@
 			isa = PBXGroup;
 			children = (
 				012A88C7238DB02000FE3DA1 /* MoleculeDelegateProtocol.swift */,
+				27F6B08726051831008529AA /* MoleculeTreeTraversalProtocol.swift */,
 				017BEB47236230DB0024EF95 /* MoleculeViewProtocol.swift */,
 				D20F3B43252E00E4004B3F56 /* PageProtocol.swift */,
 				012A88AC238C418100FE3DA1 /* TemplateProtocol.swift */,
@@ -2820,6 +2826,7 @@
 				0AE98BB323FF0934004C5109 /* ExternalLinkModel.swift in Sources */,
 				D20FB165241A5D75004AFC3A /* NavigationItemModel.swift in Sources */,
 				AA2AD118244EE48C00BBFFE3 /* ListDeviceComplexLinkMediumModel.swift in Sources */,
+				27F6B08826051831008529AA /* MoleculeTreeTraversalProtocol.swift in Sources */,
 				D2D3957A252FDBB300047B11 /* ModalSectionListTemplate.swift in Sources */,
 				DB06250B2293456500B72DD3 /* LeftRightLabelView.swift in Sources */,
 				D28BA741248025A300B75CB8 /* TabBarModel.swift in Sources */,
@@ -2945,6 +2952,7 @@
 				8D4687E2242E2DE400802879 /* ListFourColumnDataUsageListItemModel.swift in Sources */,
 				D29E28DD23D7404C00ACEA85 /* ContainerHelper.swift in Sources */,
 				012A88C2238D7BCA00FE3DA1 /* CarouselItemModel.swift in Sources */,
+				27F6B08C26052AFF008529AA /* ParentMoleculeModelProtocol.swift in Sources */,
 				0AB764D324460FA400E7FE72 /* UIPickerView+Extension.swift in Sources */,
 				D29DF29E21E7AE3B003B2FB9 /* MFStyler.m in Sources */,
 				94C661D923CCF4B400D9FE5B /* LeftRightLabelModel.swift in Sources */,
diff --git a/MVMCoreUI/Atomic/Molecules/HorizontalCombinationViews/TwoButtonViewModel.swift b/MVMCoreUI/Atomic/Molecules/HorizontalCombinationViews/TwoButtonViewModel.swift
index d4da0ba4..c767dc36 100644
--- a/MVMCoreUI/Atomic/Molecules/HorizontalCombinationViews/TwoButtonViewModel.swift
+++ b/MVMCoreUI/Atomic/Molecules/HorizontalCombinationViews/TwoButtonViewModel.swift
@@ -9,7 +9,7 @@
 import UIKit
 
 
-public class TwoButtonViewModel: MoleculeModelProtocol {
+public class TwoButtonViewModel: ParentMoleculeModelProtocol {
     //--------------------------------------------------
     // MARK: - Properties
     //--------------------------------------------------
@@ -19,6 +19,10 @@ public class TwoButtonViewModel: MoleculeModelProtocol {
     public var primaryButton: ButtonModel?
     public var secondaryButton: ButtonModel?
     
+    public var children: [MoleculeModelProtocol] {
+        return [primaryButton, secondaryButton].compactMap { $0 }
+    }
+    
     //--------------------------------------------------
     // MARK: - Keys
     //--------------------------------------------------
diff --git a/MVMCoreUI/Atomic/Molecules/Items/TabsListItemModel.swift b/MVMCoreUI/Atomic/Molecules/Items/TabsListItemModel.swift
index c83b8933..d0f13c1f 100644
--- a/MVMCoreUI/Atomic/Molecules/Items/TabsListItemModel.swift
+++ b/MVMCoreUI/Atomic/Molecules/Items/TabsListItemModel.swift
@@ -12,7 +12,7 @@ public class TabsListItemModel: ListItemModel, MoleculeModelProtocol {
     public static var identifier: String = "tabsListItem"
     var tabs: TabsModel
     var molecules: [[ListItemModelProtocol & MoleculeModelProtocol]]
-
+    
     private enum CodingKeys: String, CodingKey {
         case moleculeName
         case tabs
diff --git a/MVMCoreUI/Atomic/Molecules/OtherContainers/BGVideoImageMoleculeModel.swift b/MVMCoreUI/Atomic/Molecules/OtherContainers/BGVideoImageMoleculeModel.swift
index f2ee20af..6b9a89c3 100644
--- a/MVMCoreUI/Atomic/Molecules/OtherContainers/BGVideoImageMoleculeModel.swift
+++ b/MVMCoreUI/Atomic/Molecules/OtherContainers/BGVideoImageMoleculeModel.swift
@@ -15,6 +15,10 @@ open class BGVideoImageMoleculeModel: BGImageMoleculeModel {
     
     public var video: VideoModel
 
+    public override var children: [MoleculeModelProtocol] {
+        return [video, molecule]
+    }
+    
     private enum CodingKeys: String, CodingKey {
         case video
     }
diff --git a/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerModel.swift b/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerModel.swift
index 77b40716..5ddec277 100644
--- a/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerModel.swift
+++ b/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerModel.swift
@@ -15,6 +15,10 @@ open class MoleculeContainerModel: ContainerModel, MoleculeContainerModelProtoco
     public var backgroundColor: Color?
     public var molecule: MoleculeModelProtocol
     
+    public var children: [MoleculeModelProtocol] {
+        return [molecule]
+    }
+    
     private enum CodingKeys: String, CodingKey {
         case moleculeName
         case molecule
@@ -40,7 +44,7 @@ open class MoleculeContainerModel: ContainerModel, MoleculeContainerModelProtoco
         backgroundColor = try typeContainer.decodeIfPresent(Color.self, forKey: .backgroundColor)
         try super.init(from: decoder)
     }
-              
+    
     open override func encode(to encoder: Encoder) throws {
         try super.encode(to: encoder)
         var container = encoder.container(keyedBy: CodingKeys.self)
diff --git a/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerProtocol.swift b/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerProtocol.swift
index 882cf181..1e34932f 100644
--- a/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerProtocol.swift
+++ b/MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerProtocol.swift
@@ -8,6 +8,14 @@
 
 import Foundation
 
-public protocol MoleculeContainerModelProtocol: ContainerModelProtocol {
+public protocol MoleculeContainerModelProtocol: ContainerModelProtocol, ParentMoleculeModelProtocol {
     var molecule: MoleculeModelProtocol { get set }
 }
+
+public extension MoleculeContainerModelProtocol {
+
+    var children: [MoleculeModelProtocol] {
+        return [molecule]
+    }
+
+}
diff --git a/MVMCoreUI/Atomic/Molecules/VerticalCombinationViews/HeadlineBodyModel.swift b/MVMCoreUI/Atomic/Molecules/VerticalCombinationViews/HeadlineBodyModel.swift
index ebc5614e..a7ff7280 100644
--- a/MVMCoreUI/Atomic/Molecules/VerticalCombinationViews/HeadlineBodyModel.swift
+++ b/MVMCoreUI/Atomic/Molecules/VerticalCombinationViews/HeadlineBodyModel.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 
-@objcMembers open class HeadlineBodyModel: MoleculeModelProtocol {
+@objcMembers open class HeadlineBodyModel: ParentMoleculeModelProtocol {
     //--------------------------------------------------
     // MARK: - Properties
     //--------------------------------------------------
@@ -21,6 +21,10 @@ import Foundation
     public var style: Style?
     public var backgroundColor: Color?
     
+    public var children: [MoleculeModelProtocol] {
+        return [headline, body].compactMap { $0 }
+    }
+    
     //--------------------------------------------------
     // MARK: - Enum
     //--------------------------------------------------
diff --git a/MVMCoreUI/Atomic/Organisms/Carousel/CarouselModel.swift b/MVMCoreUI/Atomic/Organisms/Carousel/CarouselModel.swift
index 5bf0728c..8721db72 100644
--- a/MVMCoreUI/Atomic/Organisms/Carousel/CarouselModel.swift
+++ b/MVMCoreUI/Atomic/Organisms/Carousel/CarouselModel.swift
@@ -9,7 +9,7 @@
 import UIKit
 
 
-@objcMembers public class CarouselModel: MoleculeModelProtocol, FormFieldProtocol {
+@objcMembers public class CarouselModel: ParentMoleculeModelProtocol, FormFieldProtocol {
     
     //--------------------------------------------------
     // MARK: - Properties
@@ -144,3 +144,11 @@ import UIKit
         try container.encode(selectedIndex, forKey: .selectedIndex)
     }
 }
+
+extension CarouselModel {
+    
+    public var children: [MoleculeModelProtocol] {
+        return molecules
+    }
+    
+}
diff --git a/MVMCoreUI/Atomic/Organisms/StackModel.swift b/MVMCoreUI/Atomic/Organisms/StackModel.swift
index d96da035..8b1dcc0f 100644
--- a/MVMCoreUI/Atomic/Organisms/StackModel.swift
+++ b/MVMCoreUI/Atomic/Organisms/StackModel.swift
@@ -7,7 +7,8 @@
 //
 
 
-@objcMembers public class StackModel: ContainerModel, StackModelProtocol, MoleculeModelProtocol {
+@objcMembers public class StackModel: ContainerModel, StackModelProtocol {
+    
     //--------------------------------------------------
     // MARK: - Properties
     //--------------------------------------------------
@@ -24,6 +25,10 @@
     public var spacing: CGFloat = StackModel.defaultSpacing
     public var useStackSpacingBeforeFirstItem = false
     
+    public var children: [MoleculeModelProtocol] {
+        return molecules
+    }
+    
     //--------------------------------------------------
     // MARK: - Initializer
     //--------------------------------------------------
@@ -77,4 +82,5 @@
         try container.encode(moleculeName, forKey: .moleculeName)
         try container.encodeIfPresent(backgroundColor, forKey: .backgroundColor)
     }
+    
 }
diff --git a/MVMCoreUI/Atomic/Organisms/StackModelProtocol.swift b/MVMCoreUI/Atomic/Organisms/StackModelProtocol.swift
index 54f6c9d0..068418f0 100644
--- a/MVMCoreUI/Atomic/Organisms/StackModelProtocol.swift
+++ b/MVMCoreUI/Atomic/Organisms/StackModelProtocol.swift
@@ -8,9 +8,15 @@
 
 import Foundation
 
-public protocol StackModelProtocol {
+public protocol StackModelProtocol: ParentMoleculeModelProtocol {
     var molecules: [StackItemModelProtocol & MoleculeModelProtocol] { get set }
     var axis: NSLayoutConstraint.Axis { get set }
     var spacing: CGFloat { get set }
     var useStackSpacingBeforeFirstItem: Bool { get set }
 }
+
+extension StackModelProtocol {
+    
+    public var children: [MoleculeModelProtocol] { return molecules }
+    
+}
diff --git a/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift b/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift
index a998b79d..79368f01 100644
--- a/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift
+++ b/MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift
@@ -7,7 +7,7 @@ public enum MolecularError: Swift.Error {
 }
 
 
-public protocol MoleculeModelProtocol: ModelProtocol, AccessibilityModelProtocol {
+public protocol MoleculeModelProtocol: ModelProtocol, AccessibilityModelProtocol, MoleculeTreeTraversalProtocol {
     var moleculeName: String { get }
     var backgroundColor: Color? { get set }
 }
@@ -20,3 +20,55 @@ public extension MoleculeModelProtocol {
     
     static var categoryCodingKey: String { "moleculeName" }
 }
+
+public extension MoleculeModelProtocol {
+    
+    // Base case. No additional children to traverse.
+    func reduceDepthFirstTraverse<Result>(options: TreeTraversalOptions, depth: Int, initialResult: Result, nextPartialResult: (Result, MoleculeModelProtocol, Int)->Result) -> Result {
+        return nextPartialResult(initialResult, self, depth)
+    }
+    
+    // Base case. No additional children to traverse.
+    func depthFirstTraverse(options: TreeTraversalOptions, depth: Int, onVisit: (Int, MoleculeModelProtocol)->Void) {
+        onVisit(depth, self)
+    }
+    
+}
+
+public extension Array where Element == MoleculeModelProtocol {
+    
+    func reduceDepthFirstTraverse<Result>(options: TreeTraversalOptions, depth: Int, initialResult: Result, nextPartialResult: (Result, MoleculeModelProtocol, Int)->Result) -> Result {
+        return reduce(initialResult) { (result, molecule) -> Result in
+            return molecule.reduceDepthFirstTraverse(options: options, depth: depth, initialResult: result, nextPartialResult: nextPartialResult)
+        }
+    }
+    
+    func depthFirstTraverse(options: TreeTraversalOptions, depth: Int, onVisit: (Int, MoleculeModelProtocol)->Void) {
+        forEach { (molecule) in
+            molecule.depthFirstTraverse(options: options, depth: depth, onVisit: onVisit)
+        }
+    }
+}
+
+// Would prefer these to be defined in MoleculeTreeTraversalProtocol that MoleculeModelProtocol inherits.
+public extension Array where Element == MoleculeModelProtocol {
+    
+    func countMolecules() -> Int {
+        return reduce(0) { (accumulator, molecule) in
+            return accumulator + molecule.countMolecules()
+        }
+    }
+    
+    func printMolecules() {
+        forEach { (molecule) in
+            molecule.printMolecules()
+        }
+    }
+    
+    func allMoleculesOfType<T>() -> [T] {
+        return reduce([]) { (accumulator, molecule) in
+            return accumulator + molecule.allMoleculesOfType()
+        }
+    }
+    
+}
diff --git a/MVMCoreUI/Atomic/Protocols/ModelProtocols/ParentMoleculeModelProtocol.swift b/MVMCoreUI/Atomic/Protocols/ModelProtocols/ParentMoleculeModelProtocol.swift
new file mode 100644
index 00000000..2ec05db4
--- /dev/null
+++ b/MVMCoreUI/Atomic/Protocols/ModelProtocols/ParentMoleculeModelProtocol.swift
@@ -0,0 +1,55 @@
+//
+//  ParentModelProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Kyle on 3/19/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+public protocol ParentMoleculeModelProtocol: MoleculeModelProtocol {
+    
+    var children: [MoleculeModelProtocol] { get }
+    
+}
+
+public extension ParentMoleculeModelProtocol {
+    
+    func reduceDepthFirstTraverse<Result>(options: TreeTraversalOptions, depth: Int, initialResult: Result, nextPartialResult: (Result, MoleculeModelProtocol, Int) -> Result) -> Result {
+        var result = initialResult
+        if (options == .parentFirst) {
+            result = nextPartialResult(result, self, depth)
+        }
+        result = children.reduce(result) { (result, molecule) -> Result in
+            if let additionalParent = molecule as? ParentMoleculeModelProtocol {
+                // Safety net to make sure the ParentMoleculeModelProtocol's method extension is called over the base MoleculeModelProtocol.
+                return additionalParent.reduceDepthFirstTraverse(options: options, depth: depth + 1, initialResult: result, nextPartialResult: nextPartialResult)
+            }
+            return molecule.reduceDepthFirstTraverse(options: options, depth: depth + 1, initialResult: result, nextPartialResult: nextPartialResult)
+        }
+        if (options == .childFirst) {
+            result = nextPartialResult(result, self, depth)
+        }
+        // if options == .leafOnly don't call on self.
+        return result
+    }
+    
+    func depthFirstTraverse(options: TreeTraversalOptions, depth: Int, onVisit: (Int, MoleculeModelProtocol)->Void) {
+        if (options == .parentFirst) {
+            onVisit(depth, self)
+        }
+        children.forEach { (molecule) in
+            if let additionalParent = molecule as? ParentMoleculeModelProtocol {
+                // Safety net to make sure the ParentMoleculeModelProtocol's method extension is called over the base MoleculeModelProtocol.
+                additionalParent.depthFirstTraverse(options: options, depth: depth + 1, onVisit: onVisit)
+            } else {
+                molecule.depthFirstTraverse(options: options, depth: depth + 1, onVisit: onVisit)
+            }
+        }
+        if (options == .childFirst) {
+            onVisit(depth, self)
+        }
+        // if options == .leafOnly don't call on self.
+    }
+}
diff --git a/MVMCoreUI/Atomic/Protocols/ModelProtocols/TemplateModelProtocol.swift b/MVMCoreUI/Atomic/Protocols/ModelProtocols/TemplateModelProtocol.swift
index 3ed37d6b..1f9db75b 100644
--- a/MVMCoreUI/Atomic/Protocols/ModelProtocols/TemplateModelProtocol.swift
+++ b/MVMCoreUI/Atomic/Protocols/ModelProtocols/TemplateModelProtocol.swift
@@ -9,8 +9,9 @@
 import Foundation
 
 
-public protocol TemplateModelProtocol: PageModelProtocol, ModelProtocol {
+public protocol TemplateModelProtocol: PageModelProtocol, ModelProtocol, MoleculeTreeTraversalProtocol {
     var template: String { get }
+    var rootMolecules: [MoleculeModelProtocol] { get }
 }
 
 public extension TemplateModelProtocol {
@@ -26,4 +27,12 @@ public extension TemplateModelProtocol {
     static var categoryName: String {
         return "\(TemplateModelProtocol.self)"
     }
+    
+    func reduceDepthFirstTraverse<Result>(options: TreeTraversalOptions, depth: Int, initialResult: Result, nextPartialResult: (Result, MoleculeModelProtocol, Int) -> Result) -> Result {
+        return rootMolecules.reduceDepthFirstTraverse(options: options, depth: depth, initialResult: initialResult, nextPartialResult: nextPartialResult)
+    }
+    
+    func depthFirstTraverse(options: TreeTraversalOptions, depth: Int, onVisit: (Int, MoleculeModelProtocol) -> Void) {
+        return rootMolecules.depthFirstTraverse(options: options, depth: depth, onVisit: onVisit)
+    }
 }
diff --git a/MVMCoreUI/Atomic/Protocols/MoleculeTreeTraversalProtocol.swift b/MVMCoreUI/Atomic/Protocols/MoleculeTreeTraversalProtocol.swift
new file mode 100644
index 00000000..4e7efabb
--- /dev/null
+++ b/MVMCoreUI/Atomic/Protocols/MoleculeTreeTraversalProtocol.swift
@@ -0,0 +1,54 @@
+
+//
+//  TreeTraversalProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Kyle on 3/19/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+public enum TreeTraversalOptions {
+    case parentFirst
+    case childFirst
+    case leafNodesOnly
+}
+
+public protocol MoleculeTreeTraversalProtocol {
+        
+    // Future options -- Parent first depth first, leaves only.
+    
+    func reduceDepthFirstTraverse<Result>(options: TreeTraversalOptions, depth: Int, initialResult: Result, nextPartialResult: (Result, MoleculeModelProtocol, Int)->Result) -> Result
+    
+    func depthFirstTraverse(options: TreeTraversalOptions, depth: Int, onVisit: (Int, MoleculeModelProtocol)->Void)
+    
+    //func breadthFirstTraverse()
+}
+
+//
+// Helper Extensions
+//
+
+extension MoleculeTreeTraversalProtocol {
+    
+    func countMolecules(options: TreeTraversalOptions = .parentFirst) -> Int {
+        return reduceDepthFirstTraverse(options: options, depth: 0, initialResult: 0) { (accumulator, molecule, depth) in
+            return accumulator + 1
+        }
+    }
+    
+    func printMolecules(options: TreeTraversalOptions = .parentFirst) {
+        depthFirstTraverse(options: options, depth: 1) { (depth, molecule) in
+            print("\(String(repeating: ">>", count: depth)) \"\(molecule.moleculeName)\" [\(molecule)]")
+        }
+    }
+    
+    func allMoleculesOfType<T>(options: TreeTraversalOptions = .parentFirst) -> [T] {
+        return reduceDepthFirstTraverse(options: options, depth: 0, initialResult: []) { (accumulator, molecule, depth) in
+            if let typedMolecule = molecule as? T {
+                return accumulator + [typedMolecule]
+            }
+            return accumulator
+        }
+    }
+    
+}
diff --git a/MVMCoreUI/Atomic/Templates/CollectionTemplateModel.swift b/MVMCoreUI/Atomic/Templates/CollectionTemplateModel.swift
index f9d8c0a7..b0f3ae92 100644
--- a/MVMCoreUI/Atomic/Templates/CollectionTemplateModel.swift
+++ b/MVMCoreUI/Atomic/Templates/CollectionTemplateModel.swift
@@ -18,6 +18,13 @@ import Foundation
     }
     public var molecules: [CollectionItemModelProtocol & MoleculeModelProtocol]?
     public var columns: Int?
+    
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        if let molecules = molecules {
+            return super.rootMolecules + molecules
+        }
+        return super.rootMolecules
+    }
 
     //--------------------------------------------------
     // MARK: - Initializer
diff --git a/MVMCoreUI/Atomic/Templates/ListPageTemplateModel.swift b/MVMCoreUI/Atomic/Templates/ListPageTemplateModel.swift
index a7c92a08..44868e10 100644
--- a/MVMCoreUI/Atomic/Templates/ListPageTemplateModel.swift
+++ b/MVMCoreUI/Atomic/Templates/ListPageTemplateModel.swift
@@ -20,6 +20,13 @@ import Foundation
     public var line: LineModel?
     public var scrollToRowIndex: Int?
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        if let molecules = molecules {
+            return super.rootMolecules + molecules
+        }
+        return super.rootMolecules
+    }
+    
     /// This template requires content.
     func validateModelHasContent() throws {
         if header == nil,
diff --git a/MVMCoreUI/Atomic/Templates/StackPageTemplateModel.swift b/MVMCoreUI/Atomic/Templates/StackPageTemplateModel.swift
index f21a0421..6491bd8d 100644
--- a/MVMCoreUI/Atomic/Templates/StackPageTemplateModel.swift
+++ b/MVMCoreUI/Atomic/Templates/StackPageTemplateModel.swift
@@ -15,6 +15,10 @@ import Foundation
     }
     public var moleculeStack: StackModel
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        return [header, moleculeStack, footer].compactMap { $0 }
+    }
+    
     public init(pageType: String, moleculeStack: StackModel) {
         self.moleculeStack = moleculeStack
         super.init(pageType: pageType)
diff --git a/MVMCoreUI/Atomic/Templates/TemplateModel.swift b/MVMCoreUI/Atomic/Templates/TemplateModel.swift
index bb8bb104..c3d9bbbb 100644
--- a/MVMCoreUI/Atomic/Templates/TemplateModel.swift
+++ b/MVMCoreUI/Atomic/Templates/TemplateModel.swift
@@ -30,6 +30,7 @@ import Foundation
     public var navigationBar: (NavigationItemModelProtocol & MoleculeModelProtocol)?
     public var formRules: [FormGroupRule]?
     public var behaviors: [PageBehaviorProtocol]?
+    public var rootMolecules: [MoleculeModelProtocol] { [] }
     
     public var tabBarHidden: Bool = false
     public var tabBarIndex: Int?
diff --git a/MVMCoreUI/Atomic/Templates/ThreeLayerModelBase.swift b/MVMCoreUI/Atomic/Templates/ThreeLayerModelBase.swift
index 1120b0e7..25e7d1e9 100644
--- a/MVMCoreUI/Atomic/Templates/ThreeLayerModelBase.swift
+++ b/MVMCoreUI/Atomic/Templates/ThreeLayerModelBase.swift
@@ -9,11 +9,16 @@
 import Foundation
 
 @objcMembers open class ThreeLayerModelBase: TemplateModel, ThreeLayerTemplateModelProtocol {
+    
     public var anchorHeader: Bool = false
     public var header: MoleculeModelProtocol?
     public var anchorFooter: Bool = false
     public var footer: MoleculeModelProtocol?
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        return [header, footer].compactMap { $0 }
+    }
+    
     public override init(pageType: String) {
         super.init(pageType: pageType)
     }
diff --git a/MVMCoreUI/Atomic/Templates/ThreeLayerPageTemplateModel.swift b/MVMCoreUI/Atomic/Templates/ThreeLayerPageTemplateModel.swift
index c4e93f7a..ced0b9ab 100644
--- a/MVMCoreUI/Atomic/Templates/ThreeLayerPageTemplateModel.swift
+++ b/MVMCoreUI/Atomic/Templates/ThreeLayerPageTemplateModel.swift
@@ -14,6 +14,13 @@ import Foundation
     }
     public var middle: MoleculeModelProtocol?
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        if let middle = middle {
+            return super.rootMolecules + [middle]
+        }
+        return super.rootMolecules
+    }
+    
     public init(pageType: String, header: MoleculeModelProtocol?, middle: MoleculeModelProtocol?, footer: MoleculeModelProtocol?) {
         super.init(pageType: pageType)
         self.header = header