diff --git a/datamodel/low/base/external_doc.go b/datamodel/low/base/external_doc.go
index cb1c678..828fe92 100644
--- a/datamodel/low/base/external_doc.go
+++ b/datamodel/low/base/external_doc.go
@@ -31,6 +31,7 @@ func (ex *ExternalDoc) Build(root *yaml.Node, idx *index.SpecIndex) error {
 	return nil
 }
 
+// GetExtensions returns all ExternalDoc extensions and satisfies the low.HasExtensions interface.
 func (ex *ExternalDoc) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
 	if ex == nil {
 		return nil
diff --git a/datamodel/low/base/tag.go b/datamodel/low/base/tag.go
index 0057243..9fef01f 100644
--- a/datamodel/low/base/tag.go
+++ b/datamodel/low/base/tag.go
@@ -37,6 +37,14 @@ func (t *Tag) Build(root *yaml.Node, idx *index.SpecIndex) error {
 	return err
 }
 
+// GetExtensions returns all Tag extensions and satisfies the low.HasExtensions interface.
+func (t *Tag) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+	if t == nil {
+		return nil
+	}
+	return t.Extensions
+}
+
 // TODO: future mutation API experiment code is here. this snippet is to re-marshal the object.
 //func (t *Tag) MarshalYAML() (interface{}, error) {
 //	m := make(map[string]interface{})
diff --git a/what-changed/external_docs.go b/what-changed/external_docs.go
index 51015a9..41184c4 100644
--- a/what-changed/external_docs.go
+++ b/what-changed/external_docs.go
@@ -25,7 +25,7 @@ func CompareExternalDocs(l, r *lowbase.ExternalDoc) *ExternalDocChanges {
 	var changes []*Change[*lowbase.ExternalDoc]
 	var props []*PropertyCheck[*lowbase.ExternalDoc]
 
-	// check URL
+	// URL
 	props = append(props, &PropertyCheck[*lowbase.ExternalDoc]{
 		LeftNode:  l.URL.ValueNode,
 		RightNode: r.URL.ValueNode,
@@ -36,6 +36,7 @@ func CompareExternalDocs(l, r *lowbase.ExternalDoc) *ExternalDocChanges {
 		New:       r,
 	})
 
+	// description.
 	props = append(props, &PropertyCheck[*lowbase.ExternalDoc]{
 		LeftNode:  l.Description.ValueNode,
 		RightNode: r.Description.ValueNode,
diff --git a/what-changed/tags.go b/what-changed/tags.go
index 8e89ca5..1cdab12 100644
--- a/what-changed/tags.go
+++ b/what-changed/tags.go
@@ -46,57 +46,41 @@ func CompareTags(l, r []low.ValueReference[*lowbase.Tag]) *TagChanges {
 
 	// check for removals, modifications and moves
 	for i := range seenLeft {
-		if seenRight[i] == nil {
-			// deleted
-			CreateChange[*lowbase.Tag](&changes, ObjectRemoved, i, seenLeft[i].ValueNode, nil,
-				false, seenLeft[i].Value, nil)
-			continue
-		}
+
+		CheckForAdditionOrRemoval[*lowbase.Tag](seenLeft, seenRight, i, &changes, false, true)
 
 		// if the existing tag exists, let's check it.
 		if seenRight[i] != nil {
 
-			// check if name has moved
-			ctx := CreateContext(seenLeft[i].Value.Name.ValueNode, seenRight[i].Value.Name.ValueNode)
-			if ctx.HasChanged() {
-				CreateChange[*lowbase.Tag](&changes, Moved, lowv3.NameLabel,
-					seenLeft[i].Value.Name.ValueNode, seenRight[i].Value.Name.ValueNode,
-					false, seenLeft[i].Value, seenRight[i].Value)
+			var props []*PropertyCheck[*lowbase.Tag]
 
-			}
+			// Name
+			props = append(props, &PropertyCheck[*lowbase.Tag]{
+				LeftNode:  seenLeft[i].Value.Name.ValueNode,
+				RightNode: seenRight[i].Value.Name.ValueNode,
+				Label:     lowv3.NameLabel,
+				Changes:   &changes,
+				Breaking:  true,
+				Original:  seenLeft[i].Value,
+				New:       seenRight[i].Value,
+			})
 
-			// check if description has been modified
-			if seenLeft[i].Value.Description.Value != seenRight[i].Value.Description.Value {
-				var changeType int
-				changeType = Modified
-				ctx = CreateContext(seenLeft[i].Value.Description.ValueNode, seenRight[i].Value.Description.ValueNode)
-				if ctx.HasChanged() {
-					changeType = ModifiedAndMoved
-				}
-				CreateChange[*lowbase.Tag](&changes, changeType, lowv3.DescriptionLabel,
-					seenLeft[i].Value.Description.ValueNode, seenRight[i].Value.Description.ValueNode,
-					false, seenLeft[i].Value, seenRight[i].Value)
-			}
+			// Description
+			props = append(props, &PropertyCheck[*lowbase.Tag]{
+				LeftNode:  seenLeft[i].Value.Description.ValueNode,
+				RightNode: seenRight[i].Value.Description.ValueNode,
+				Label:     lowv3.DescriptionLabel,
+				Changes:   &changes,
+				Breaking:  true,
+				Original:  seenLeft[i].Value,
+				New:       seenRight[i].Value,
+			})
 
-			// check if description has moved
-			if seenLeft[i].Value.Description.Value == seenRight[i].Value.Description.Value {
-				ctx = CreateContext(seenLeft[i].Value.Description.ValueNode, seenRight[i].Value.Description.ValueNode)
-				if ctx.HasChanged() {
-					CreateChange[*lowbase.Tag](&changes, Moved, lowv3.DescriptionLabel,
-						seenLeft[i].Value.Description.ValueNode, seenRight[i].Value.Description.ValueNode,
-						false, seenLeft[i].Value, seenRight[i].Value)
-				}
-			}
+			// check properties
+			CheckProperties(props)
 
-			// compare extensions
-			var lExt, rExt map[low.KeyReference[string]]low.ValueReference[any]
-			if l != nil && len(seenLeft[i].Value.Extensions) > 0 {
-				lExt = seenLeft[i].Value.Extensions
-			}
-			if r != nil && len(seenRight[i].Value.Extensions) > 0 {
-				rExt = seenRight[i].Value.Extensions
-			}
-			tc.ExtensionChanges = CompareExtensions(lExt, rExt)
+			// check extensions
+			tc.ExtensionChanges = CheckExtensions(seenLeft[i].GetValue(), seenRight[i].GetValue())
 
 			// compare external docs
 			tc.ExternalDocs = CompareExternalDocs(seenLeft[i].Value.ExternalDocs.Value,
@@ -104,15 +88,6 @@ func CompareTags(l, r []low.ValueReference[*lowbase.Tag]) *TagChanges {
 		}
 	}
 
-	// check for additions
-	for i := range seenRight {
-		if seenLeft[i] == nil {
-			// added
-			CreateChange[*lowbase.Tag](&changes, ObjectAdded, i,
-				nil, seenRight[i].ValueNode,
-				false, nil, seenRight[i].Value)
-		}
-	}
 	if len(changes) <= 0 {
 		return nil
 	}
diff --git a/what-changed/what_changed.go b/what-changed/what_changed.go
index dfab5e0..fc55dc8 100644
--- a/what-changed/what_changed.go
+++ b/what-changed/what_changed.go
@@ -108,6 +108,39 @@ type PropertyCheck[T any] struct {
 	Changes   *[]*Change[T]
 }
 
+func CheckForAdditionOrRemoval[T any](l, r map[string]*low.ValueReference[T], label string, changes *[]*Change[T],
+	breakingAdd, breakingRemove bool) {
+	var left, right T
+	if CheckObjectRemoved(l, r) {
+		left = l[label].GetValue()
+		CreateChange[T](changes, ObjectRemoved, label, l[label].GetValueNode(), nil,
+			breakingRemove, left, right)
+	}
+	if added, key := CheckObjectAdded(l, r); added {
+		right = r[key].GetValue()
+		CreateChange[T](changes, ObjectAdded, label, nil, r[key].GetValueNode(),
+			breakingAdd, left, right)
+	}
+}
+
+func CheckObjectRemoved[T any](l, r map[string]*T) bool {
+	for i := range l {
+		if r[i] == nil {
+			return true
+		}
+	}
+	return false
+}
+
+func CheckObjectAdded[T any](l, r map[string]*T) (bool, string) {
+	for i := range r {
+		if l[i] == nil {
+			return true, i
+		}
+	}
+	return false, ""
+}
+
 func CheckProperties[T any](properties []*PropertyCheck[T]) {
 	for _, n := range properties {
 		CheckPropertyAdditionOrRemoval(n.LeftNode, n.RightNode, n.Label, n.Changes, n.Breaking, n.Original, n.New)