diff --git a/src/components/Feature.vue b/src/components/Feature.vue
index 4987fb11b85b4e54b909c6aa174d6bc372d209c2..57e4b10a36cad0b306cd7c9ee11051eda3d28d94 100644
--- a/src/components/Feature.vue
+++ b/src/components/Feature.vue
@@ -6,18 +6,24 @@
       <ul v-if="isFeature(child)" style="list-style-type:none; padding:5px;">
         <li v-for="attr in child.feature">
           <span v-if="attr._attributes">
-            <v-chip label small v-on:click.native="mark(attr.ref)">
-              <span v-if="attr._attributes.category">Category: {{(attr._attributes.category)}}</span>
-              <span v-if="attr._attributes.type">, Type: {{(attr._attributes.type)}}</span>
-              <span v-if="attr._attributes.subtype">, Subtype: {{(attr._attributes.subtype)}}</span>
-            </v-chip>
+            <v-tooltip right>
+              <v-chip label small v-on:click.native="mark(attr.ref)" slot="activator">
+                <span v-if="attr._attributes.category">Category: {{(attr._attributes.category)}}</span>
+                <span v-if="attr._attributes.type">, Type: {{(attr._attributes.type)}}</span>
+                <span v-if="attr._attributes.subtype">, Subtype: {{(attr._attributes.subtype)}}</span>
+              </v-chip>
+              <span v-if="attr._attributes.ref">Lines: {{attr._attributes.ref}}</span>
+            </v-tooltip>
           </span>
           <span v-else-if="attr.category">
-            <v-chip label small v-on:click.native="mark(attr.ref)">
-              <span v-if="attr.category">Category: {{(attr.category)}}</span>
-              <span v-if="attr.type">, Type: {{(attr.type)}}</span>
-              <span v-if="attr.subtype">, Subtype: {{(attr.subtype)}}</span>
-            </v-chip>
+            <v-tooltip right>
+              <v-chip label small v-on:click.native="mark(attr.ref)" slot="activator">
+                <span v-if="attr.category">Category: {{(attr.category)}}</span>
+                <span v-if="attr.type">, Type: {{(attr.type)}}</span>
+                <span v-if="attr.subtype">, Subtype: {{(attr.subtype)}}</span>
+              </v-chip>
+              <span v-if="attr.ref">Lines: {{attr.ref}}</span>
+            </v-tooltip>
           </span>
           <span v-else>
             <v-chip label small>