diff --git a/app/Http/Controllers/TableController.php b/app/Http/Controllers/TableController.php
index 8f84bcf..2633bd5 100644
--- a/app/Http/Controllers/TableController.php
+++ b/app/Http/Controllers/TableController.php
@@ -31,7 +31,7 @@ class TableController extends Controller
             ->where('name', $table)->first();
         if ($tableModel === null) abort(404, "No such table.");
 
-        // make it possible to show other revisions
+        // option to show other revisions
         if ($input->has('rev')) {
             $rev = (int)$input->rev;
             $revision = $tableModel->revisions()->orderBy('created_at')->skip($rev - 1)->first();
@@ -54,6 +54,28 @@ class TableController extends Controller
         ]);
     }
 
+    public function draftChange(Request $request, User $user, string $table)
+    {
+        /** @var Table $tableModel */
+        $tableModel = $user->tables()->with('revision')->where('name', $table)->first();
+        if ($tableModel === null) abort(404, "No such table.");
+
+        $revision = $tableModel->revision;
+
+        $columns = Column::columnsFromJson($revision->columns);
+
+        $rows = $revision->rowsData($columns)->paginate(25, []);
+
+        // TODO instantiate changeset and store it in session
+
+        return view('table.view', [
+            'table' => $tableModel,
+            'revision' => $revision,
+            'columns' => $columns,
+            'rows' => $rows,
+        ]);
+    }
+
     public function delete(Request $request, User $user, string $table)
     {
         /** @var Table $tableModel */
diff --git a/app/Tables/Changeset.php b/app/Tables/Changeset.php
new file mode 100644
index 0000000..39cfe88
--- /dev/null
+++ b/app/Tables/Changeset.php
@@ -0,0 +1,69 @@
+<?php
+
+
+namespace App\Tables;
+
+/**
+ * Object representing a set of table modifications
+ */
+class Changeset
+{
+    /**
+     * Rows whose content changed
+     *
+     * @var array|null - [GRID -> values, ...]
+     */
+    public $rowUpdates;
+
+    /**
+     * New rows in the full Row::data format, including GRIDs.
+     * Values are identified by GCIDs from previously defined, or new columns.
+     *
+     * @var array|null - [[_id:..., ...], [..., ...], ...]
+     */
+    public $newRows;
+
+    /**
+     * Rows to be removed
+     *
+     * @var int[]|null - GRIDs
+     */
+    public $removedRows;
+
+    /**
+     * Values changed in column specifications, such as name, title, etc.
+     * This does not affect the table rows in any way.
+     *
+     * @var array[] - column specification objects, with GCIDs
+     */
+    public $columnUpdates;
+
+    /**
+     * New columns in the full format, including GCIDs
+     *
+     * @var array|null - [[id:..., ...], [..., ...], ...]
+     */
+    public $newColumns;
+
+    /**
+     * When reordering columns, here is the column IDs array
+     * in the new order. Columns meanwhile removed from the table
+     * or added to it are to be ignored or appended at the end.
+     *
+     * This shall not be filled if merely editing or adding columns,
+     * unless the order is explicitly adjusted by the user.
+     *
+     * @var string[]|null - GCIDs
+     */
+    public $columnOrder;
+
+    /**
+     * Columns to be removed
+     *
+     * The data associated to those columns may or may not be removed from the Rows.
+     * It does not matter, other than in regard to the table size.
+     *
+     * @var int[]|null - GCIDs
+     */
+    public $removedColumns;
+}