diff --git a/online-editor.js b/online-editor.js
index 60fde9c..a9bd9cb 100644
--- a/online-editor.js
+++ b/online-editor.js
@@ -1,5 +1,7 @@
 const besUrl = 'http://localhost:225/api/v2/check'
 
+let besEditors = [] // Collection of all editors on page
+
 class BesEditor {
   constructor(edit) {
     this.el = edit
@@ -11,6 +13,13 @@ class BesEditor {
     edit.addEventListener('click', e => this.handleClick(e))
   }
 
+  // Register editor
+  static register(edit) {
+    let editor = new BesEditor(edit)
+    besEditors.push(editor)
+    return editor
+  }
+
   // Recursively grammar-proofs one node.
   async proof(el) {
     switch (el.nodeType) {
@@ -317,14 +326,11 @@ class BesEditor {
   }
 }
 
-let besEditors = [] // Collection of all editors on page
-
 window.onload = () => {
   // Search and prepare all our editors found in the document.
-  document.querySelectorAll('.bes-online-editor').forEach(edit => {
-    let editor = new BesEditor(edit)
-    besEditors.push(editor)
-  })
+  document
+    .querySelectorAll('.bes-online-editor')
+    .forEach(edit => BesEditor.register(edit))
 }
 
 window.onresize = () => {