diff --git a/services/web/app/views/project/editor/editor.jade b/services/web/app/views/project/editor/editor.jade
index 13597f769a..634f743e3a 100644
--- a/services/web/app/views/project/editor/editor.jade
+++ b/services/web/app/views/project/editor/editor.jade
@@ -50,8 +50,14 @@ div.full-size(
 				input(type="checkbox", ng-model="reviewPanel.trackNewChanges")
 			.review-panel-scroller
 				.review-entry-list(review-panel-sorted)
-					.review-entry(
+					.review-entry-wrapper(
 						ng-repeat="(entry_id, entry) in reviewPanel.entries"
+					)
+						.review-entry-callout(
+							ng-class="'review-entry-callout-' + entry.type"
+							style="top: {{ entry.screenPos.y + 15 }}px; height: {{ top - entry.screenPos.y }}px"
+						)
+					.review-entry(
 						ng-class="'review-entry-' + entry.type"
 						ng-style="{'top': top}"
 					)
diff --git a/services/web/public/stylesheets/app/editor/review-panel.less b/services/web/public/stylesheets/app/editor/review-panel.less
index f13264eab2..44325dedb5 100644
--- a/services/web/public/stylesheets/app/editor/review-panel.less
+++ b/services/web/public/stylesheets/app/editor/review-panel.less
@@ -76,6 +76,43 @@
 	}
 }
 
+.review-entry-callout {
+	position: absolute;
+	width: 3px;
+	border-top: 1px solid grey;
+	border-right: 1px dashed grey;
+	&:after {
+		content: "";
+		position: absolute;
+		width: 3px;
+		top: -1px;
+		left: 3px;
+		bottom: 0;
+		border-bottom: 1px solid grey;
+	}
+	
+	&-insert {
+		border-color: green;
+		&:after {
+			border-color: green;
+		}
+	}
+	
+	&-delete {
+		border-color: red;
+		&:after {
+			border-color: red;
+		}
+	}
+	
+	&-comment {
+		border-color: orange;
+		&:after {
+			border-color: orange;
+		}
+	}
+}
+
 .has-review-panel {
 	#editor {
 		right: @review-panel-width;;