1 files changed, 15 insertions, 13 deletions
diff --git a/src/fields/Key.ts b/src/fields/Key.ts
index 61b3cdd37..4da800fac 100644
--- a/src/fields/Key.ts
+++ b/src/fields/Key.ts
@@ -31,17 +31,19 @@ export class Key extends Field {
 }
 
 export namespace KeyStore {
-    export let Prototype = new Key("Prototype");
-    export let X = new Key("X");
-    export let Y = new Key("Y");
-    export let Title = new Key("Title");
-    export let PanX = new Key("PanX");
-    export let PanY = new Key("PanY");
-    export let Scale = new Key("Scale");
-    export let Width = new Key("Width");
-    export let Height = new Key("Height");
-    export let Data = new Key("Data");
-    export let Layout = new Key("Layout");
-    export let LayoutKeys = new Key("LayoutKeys");
-    export let LayoutFields = new Key("LayoutFields");
+    export const Prototype = new Key("Prototype");
+    export const X = new Key("X");
+    export const Y = new Key("Y");
+    export const Title = new Key("Title");
+    export const Author = new Key("Author");
+    export const PanX = new Key("PanX");
+    export const PanY = new Key("PanY");
+    export const Scale = new Key("Scale");
+    export const Width = new Key("Width");
+    export const Height = new Key("Height");
+    export const Data = new Key("Data");
+    export const Layout = new Key("Layout");
+    export const LayoutKeys = new Key("LayoutKeys");
+    export const LayoutFields = new Key("LayoutFields");
+    export const ColumnsKey = new Key("SchemaColumns");
 }
 \ No newline at end of file