diff --git a/assets/main.js b/assets/main.js
index 3181958..fcefbcd 100644
--- a/assets/main.js
+++ b/assets/main.js
@@ -60,6 +60,13 @@ class LineUpper extends Button {
   }
 }
 
+class LineEditor extends Button {
+  click() {
+    // TODO replace linetext with input
+    // TODO update button text to "done"
+  }
+}
+
 class LineDowner extends Button {
   click() {
     const l = this.closest("div.line");
@@ -165,6 +172,7 @@ class PoemLines extends HTMLDivElement {
 const reorder = new CustomEvent("reorder", {bubbles: true});
 customElements.define("line-remover", LineRemover, { extends: "button" });
 customElements.define("line-pinner", LinePinner, { extends: "button" });
+customElements.define("line-editor", LineEditor, { extends: "button" });
 customElements.define("line-upper", LineUpper, { extends: "button" });
 customElements.define("line-downer", LineDowner, { extends: "button" });
 customElements.define("line-adder", LineAdder, { extends: "button" });
diff --git a/templates/index.tmpl b/templates/index.tmpl
index c1cdf29..9b01fac 100644
--- a/templates/index.tmpl
+++ b/templates/index.tmpl
@@ -12,7 +12,7 @@
     <template id="linetmpl">
       <span class="linecontrols">
         <button is="line-pinner">pin</button>
-        <button >edit</button>
+        <button is="line-editor">edit</button>
         <button is="line-upper">up</button>
         <button is="line-downer">down</button>
         <button is="line-remover">remove</button>