2 files changed, 19 insertions, 2 deletions

diff --git a/app/views/nodes/edit.html.erb b/app/views/nodes/edit.html.erb
index cdc9b36e..1c194101 100644
--- a/app/views/nodes/edit.html.erb
+++ b/app/views/nodes/edit.html.erb
@@ -6,9 +6,16 @@
         disabled: @node.autosave.present? %>
 
   <% if @node.autosave || (@node.draft && @node.head) %>
-    <%= button_to (@node.draft && !@node.autosave ? 'Destroy Draft' : 'Discard changes'),
+    <%= button_to (@node.draft && !@node.autosave ? 'Destroy Draft' : 'Discard Autosave'),
           revert_node_path(@node), method: :put,
           form: { data: { confirm: "This cannot be undone. Continue?" }, class: 'button_to destructive' } %>
+    <% if pair = @node.available_layer_pairs.find { |p| p.include?(:autosave) } %>
+      <%= button_to 'What changed?',
+            diff_node_revisions_path(@node),
+            method: :get,
+            params: { start_revision: pair.first, end_revision: pair.last },
+            form: { class: 'button_to computation' } %>
+    <% end %>
   <% end %>
 
   <%= submit_tag "Save Draft", form: dom_id(@node, :edit) %>
diff --git a/app/views/nodes/show.html.erb b/app/views/nodes/show.html.erb
index 036caf29..24693108 100644
--- a/app/views/nodes/show.html.erb
+++ b/app/views/nodes/show.html.erb
@@ -32,6 +32,16 @@
           <% end %>
         </div>
 
+        <% @node.available_layer_pairs.each do |pair| %>
+          <div class="node_info_item">
+            <%= button_to "Diff #{pair.first.to_s.capitalize} vs. #{pair.last.to_s.capitalize}",
+                  diff_node_revisions_path(@node),
+                  method: :get,
+                  params: { start_revision: pair.first, end_revision: pair.last },
+                  form: { class: 'button_to computation' } %>
+          </div>
+        <% end %>
+
         <% unless locked_by_other %>
           <% if @node.draft && !@node.autosave %>
             <div class="node_info_item">
@@ -41,7 +51,7 @@
           <% end %>
           <% if @node.draft || @node.autosave %>
             <div class="node_info_item">
-              <%= button_to (@node.draft && !@node.autosave ? 'Destroy Draft' : 'Discard changes'),
+              <%= button_to (@node.draft && !@node.autosave ? 'Destroy Draft' : 'Discard Autosave'),
                     revert_node_path(@node), method: :put,
                     form: { data: { confirm: "This cannot be undone. Continue?" }, class: 'button_to destructive' } %>
             </div>