diff --git a/src/Editor/Editor.php b/src/Editor/Editor.php
index 0c02857..3bf69a3 100644
--- a/src/Editor/Editor.php
+++ b/src/Editor/Editor.php
@@ -6,6 +6,7 @@ use NoccyLabs\JsonEdit\List\TreeList;
 use NoccyLabs\JsonEdit\Settings;
 use NoccyLabs\JsonEdit\Terminal\Terminal;
 use NoccyLabs\JsonEdit\Tree\ArrayNode;
+use NoccyLabs\JsonEdit\Tree\CollapsibleNode;
 use NoccyLabs\JsonEdit\Tree\ObjectNode;
 use NoccyLabs\JsonEdit\Tree\Tree;
 use NoccyLabs\JsonEdit\Tree\ValueNode;
@@ -79,7 +80,7 @@ class Editor
     /**
      * Load a document from array/object
      *
-     * @param mixed $document
+<     * @param mixed $document
      * @return void
      */
     public function loadDocument(mixed $document): void
@@ -147,8 +148,7 @@ class Editor
                         $this->redrawEditor();
                         $this->modified = true;
                     } else {
-                        $this->term->setCursor(1, $h);
-                        echo "\e[97;41mCan only delete from object, array\e[K\e[0m";
+                        $this->showMessage("\e[97;41mCan only delete from object, array");
                     }
                     break;
 
@@ -176,7 +176,7 @@ class Editor
                         'array' => "Insert Array[]",
                     ], 'Insert');
                     $this->redrawInfoBar([ '^C' => 'Cancel', '↑/↓' => 'Select option', 'Enter' => 'Accept' ]);
-                    $sel = $menu->display(5, 2, 30, 0, "value");
+                    $sel = $menu->display(0, 0, 30, 0, "value");
                     $this->redrawEditor();
                     switch ($sel) {
                         case 'value':
@@ -211,6 +211,15 @@ class Editor
                     $this->running = false;
                     break;
 
+                case "+":
+                    $node = $this->list->getNodeForIndex($this->currentRow);
+                    if ($node instanceof CollapsibleNode) {
+                        $node->collapse(!$node->isCollapsed());
+                        $this->list->parseTree();
+                        $this->redrawEditor();
+                    }
+                    break;
+
                 case "q":
                     Settings::$editorQuotedKeys = !Settings::$editorQuotedKeys;
                     $this->redrawEditor();
@@ -269,13 +278,12 @@ class Editor
 
         $readFrom = $this->ask("\e[33mRead from:\e[0m ", "");
 
-        $this->term->setCursor(1, $h);
         if (!file_exists($readFrom)) {
-            echo "\e[97;41mFile does not exist\e[K\e[0m";
+            $this->showMessage("\e[97;41mFile does not exist");
             return;
         }
         if (!is_readable($readFrom)) {
-            echo "\e[97;41mFile not readable\e[K\e[0m";
+            $this->showMessage("\e[97;41mFile not readable");
             return;
         }
         $ext = strtolower(pathinfo($readFrom, PATHINFO_EXTENSION));
@@ -288,7 +296,7 @@ class Editor
                 $doc = Yaml::parseFile($readFrom);
                 break;
             default:
-                echo "\e[97;41mUnable to read format: {$ext}\e[K\e[0m";
+                $this->showMessage("\e[97;41mUnable to read format: {$ext}");
                 return;
         }
 
@@ -300,8 +308,7 @@ class Editor
         $this->list->parseTree();
         $this->redrawEditor();
 
-        $this->term->setCursor(1, $h);
-        echo "\e[97;42mLoaded {$readFrom}\e[K\e[0m";
+        $this->showMessage("\e[97;42mLoaded {$readFrom}");
     }
 
     /**
@@ -329,8 +336,7 @@ class Editor
                 file_put_contents($saveTo, Yaml::dump($doc));
                 break;
             default:
-                $this->term->setCursor(1, $h);
-                echo "\e[97;41mUnable to write format: {$ext}\e[K\e[0m";
+                $this->showMessage("\e[97;41mUnable to write format: {$ext}");
         }
 
         $this->filename = $saveTo;
@@ -338,8 +344,7 @@ class Editor
         $this->modified = false;
         $this->redrawEditor();
 
-        $this->term->setCursor(1, $h);
-        echo "\e[97;42mWrote to {$saveTo}\e[K\e[0m";
+        $this->showMessage("\e[97;42mWrote to {$saveTo}");
 
 
     }
@@ -375,20 +380,20 @@ class Editor
         ## Doing stuff
 
         ### Adding keys or values
-
         To add a key or a value, navigate to a value in an array or object, or to a specific array or object, and press "i". You will be prompted for the value, and for objects the key.
-
         You can also press "I" to add arrays and objects. Just select what you want to add in the menu and press enter.
 
         ### Editing keys
-
         You can edit keys on objects. For this, press "E".
 
         ### Editing values
-
         To edit a value, press "e". The value is verbatim JSON, so strings should be quoted and all that. Anything that is unparsable JSON will be used as is, resulting in a string.
 
         ### Loading and Saving files
+        To load a file, press ^R and enter the filename to read. To write to a file, press ^W and enter the filename to write to.
+
+        ### YAML or JSON?
+        There is no need to select YAML or JSON mode. All operations work the same, and the format is determined on load or save.
 
         # Disclaimer
 
@@ -472,8 +477,9 @@ class Editor
                 $this->redrawEditor();
             }
         } else {
-            $this->term->setCursor(1, $h);
-            echo "\e[97;41mCan only edit keys on objects\e[K\e[0m";
+            // $this->term->setCursor(1, $h);
+            // echo "\e[97;41mCan only edit keys on objects\e[K\e[0m";
+            $this->showMessage("\e[97;41mCan only edit keys on objects");
         }
         
     }
@@ -505,8 +511,7 @@ class Editor
                 $this->redrawInfoBar();
             }
         } else {
-            $this->term->setCursor(1, $h);
-            echo "\e[97;41mCan not edit array/object\e[K\e[0m";
+            $this->showMessage("\e[97;41mCan not edit array/object");
         }
     }
 
@@ -702,4 +707,12 @@ class Editor
             //echo " \e[1m{$key}\e[2m \e[3m{$info}\e[0m \e[90m\u{2502}\e[0m";
     }
 
+    private function showMessage(string $message): void
+    {
+        [$w,$h] = $this->term->getSize();
+        $this->term->setCursor(1, $h);
+        echo $message."\e[K\e[0m";
+
+    }
+
 }
diff --git a/src/Editor/Menu.php b/src/Editor/Menu.php
index f23f321..294e230 100644
--- a/src/Editor/Menu.php
+++ b/src/Editor/Menu.php
@@ -27,6 +27,8 @@ class Menu
 
     private int $index = 0;
 
+    private int $scroll = 0;
+
     public function __construct(private Terminal $terminal, private array $items, private string $title = 'Menu')
     {
 
@@ -35,7 +37,16 @@ class Menu
     public function display(int $left, int $top, int $width, int $height = 0, string|int|null $value): mixed
     {
 
-        if ($height == 0) $height = count($this->items) + 4;
+        [$w,$h] = $this->terminal->getSize();
+        if ($height == 0) {
+            $height = min($h - 5, count($this->items) + 4);
+        }
+        if ($left == 0) {
+            $left = round(($w - $width) / 2);
+        }
+        if ($top == 0) {
+            $top = round(($h - $height) / 2);
+        }
 
         $this->redraw($left, $top, $width, $height);
 
@@ -69,7 +80,15 @@ class Menu
     }
 
     private function redraw(int $left, int $top, int $width, int $height) {
+
         $visibleItems = $height - 4;
+
+        $scrollTop = $this->scroll;
+        $scrollVisible = $visibleItems / count($this->items); // / $visibleItems;
+        $scrollBottom = $scrollTop + $scrollVisible;
+        $thumbTop = round($scrollTop * $visibleItems);
+        $thumbBottom = round($visibleItems * $scrollBottom);
+
         // draw head
         echo "\e[40;37m";
         $this->terminal
@@ -83,12 +102,23 @@ class Menu
         for ($n = 0; $n < $visibleItems; $n++) {
             $key = $keys[$n]??null;
             $item = " " . ($key ? ($this->items[$key]) : null);
-            $item = $item . str_repeat(" ", $width - 2 - mb_strlen($item)) . "\e[40;37m";
+            $item = $item . str_repeat(" ", $width - 2 - $this->itemlen($item)) . "\e[40;37m";
             $item = (($n == $this->index)?"\e[37;44m":"\e[40;37m") . $item;
+            if ($n >= $thumbTop && $n <= $thumbBottom) {
+                $scrollbar = "\e[97;1m".self::U_EDGE_VERTICAL_THUMB."\e[40;37;22m";
+            } else {
+                $scrollbar = "\e[37;2m".self::U_EDGE_VERTICAL_SCROLL."\e[40;37;22m";
+            }
             $this->terminal
-                ->writeAt($left, $top + 3 + $n, self::U_EDGE_VERTICAL.$item.self::U_EDGE_VERTICAL_THUMB);
+                ->writeAt($left, $top + 3 + $n, self::U_EDGE_VERTICAL.$item.$scrollbar);
         }
         echo "\e[0m";
     }
 
+    private function itemlen(string $item): int
+    {
+        $item = preg_replace('<\e\[.+?m>', '', $item);
+        return mb_strlen($item);
+    }
+
 }
\ No newline at end of file
diff --git a/src/Editor/MessageBox.php b/src/Editor/MessageBox.php
index addcdc0..c0c2e76 100644
--- a/src/Editor/MessageBox.php
+++ b/src/Editor/MessageBox.php
@@ -35,7 +35,16 @@ class MessageBox
     {
         $wrapped = explode("\n", wordwrap($this->text, $width - 4, cut_long_words:true));
         
-        if ($height == 0) $height = count($wrapped) + 4;
+        [$w,$h] = $this->terminal->getSize();
+        if ($height == 0) {
+            $height = min($h - 5, count($wrapped) + 4);
+        }
+        if ($left == 0) {
+            $left = round(($w - $width) / 2);
+        }
+        if ($top == 0) {
+            $top = round(($h - $height) / 2);
+        }
         
         $maxScroll = (count($wrapped) > $height) ? count($wrapped) - $height + 4 : 0;
 
diff --git a/src/List/TreeList.php b/src/List/TreeList.php
index 604dc02..51f75e1 100644
--- a/src/List/TreeList.php
+++ b/src/List/TreeList.php
@@ -47,12 +47,14 @@ class TreeList implements Countable
 
         if ($node instanceof ArrayNode) {
             $index = 0;
+            if ($node->isCollapsed()) return;
             foreach ($node->items as $item) {
                 $this->parseNode($item, [ ...$path, $key ], $index++);
             }
             if (!Settings::$compactGroups)
                 $this->list[$entryKey.'$'] = new Entry(depth: $level, key: $key, node: $node, closer: true);
         } elseif ($node instanceof ObjectNode) {
+            if ($node->isCollapsed()) return;
             foreach ($node->properties as $nodekey=>$item) {
                 $this->parseNode($item, [ ...$path, $key ], $nodekey);
             }
@@ -172,8 +174,18 @@ class TreeList implements Countable
         }
         if ($entry->node instanceof ArrayNode) {
             echo "[" . (Settings::$compactGroups ? "…]":"");
+            if ($entry->node->isCollapsed()) {
+                echo " \e[90m\u{25ba} \e[2m".count($entry->node->items)."\e[22m";
+            } else {
+                echo " \e[90m\u{25bc}";
+            }
         } elseif ($entry->node instanceof ObjectNode) {
             echo "{" . (Settings::$compactGroups ? "…}":"");
+            if ($entry->node->isCollapsed()) {
+                echo " \e[90m\u{25ba} \e[2m".count($entry->node->properties)."\e[22m";
+            } else {
+                echo " \e[90m\u{25bc}";
+            }
         } elseif ($entry->node instanceof ValueNode) {
             $value = $entry->node->value;
             echo match (gettype($value)) {