diff --git a/README.md b/README.md
index 7924745..1a9cd02 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,11 @@
 
 This is an editor for JSON files, that also supports YAML. 
 
+> [!WARNING]
+> This software is still very much beta. That means there will be bugs. Please
+> report them, and don't go doing stupid stuff like editing your live configuration
+> files in place.
+
 ## Features
 
 - Interactive terminal TUI application
@@ -35,7 +40,8 @@ $ mv bin/jsonedit.phar ~/bin/jsonedit
 ## Using
 
 JSONEdit is controlled using hotkeys. The essential keys are always displayed
-at the bottom of the screen.
+at the bottom of the screen. Press **h** for the help, which lists all available
+keys.
 
 ### Creating a document from scratch
 
diff --git a/src/Editor/Editor.php b/src/Editor/Editor.php
index bf1ac3c..7441554 100644
--- a/src/Editor/Editor.php
+++ b/src/Editor/Editor.php
@@ -10,11 +10,14 @@ use NoccyLabs\JsonEdit\Tree\CollapsibleNode;
 use NoccyLabs\JsonEdit\Tree\ObjectNode;
 use NoccyLabs\JsonEdit\Tree\Tree;
 use NoccyLabs\JsonEdit\Tree\ValueNode;
+use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Yaml;
 
 class Editor
 {
 
+    public static string $helpText;
+
     private Tree $document;
 
     private TreeList $list;
@@ -201,7 +204,6 @@ class Editor
                     break;
 
                 case "\x18": // ctrl-x
-
                     if ($this->modified) {
                         $menu = new Menu($this->term, [
                             'cancel' => "Return to editor",
@@ -321,12 +323,28 @@ class Editor
                     $this->showMessage("Toggle compact groups (c)");
                     break;
 
+                case "\x0d": // enter
+                    $node = $this->list->getNodeForIndex($this->currentRow);
+                    if ($node instanceof ValueNode) {
+                        if ($node->value === true) {
+                            $node->value = false;
+                            $this->modified = true;
+                            $this->redrawEditor();
+                        } elseif ($node->value === false) {
+                            $node->value = true;
+                            $this->modified = true;
+                            $this->redrawEditor();
+                        } else {
+                            $this->doEditValue();
+                        }
+                    }
+                    break;
+
                 case "\x03": // ctrl-c
                     $this->showMessage("\e[30;43mPress Ctrl-X to exit.");
                     break;
     
                 case "\x0e": // ctrl-n
-
                     if ($this->modified) {
                         $menu = new Menu($this->term, [
                             'cancel' => "Return to editor",
@@ -349,6 +367,8 @@ class Editor
                             case 'discard':
                                 break;
                         }
+                        $this->modified = false;
+                        
                     }
 
                     $this->document->load((object)[]);
@@ -359,6 +379,10 @@ class Editor
                     $this->redrawEditor();
                     break;
     
+                case "\x0F": // ctrl-o
+                    $this->doOpenFile();
+                    break;
+
                 case "\x12": // ctrl-r
                     $this->doReadFile();
                     break;
@@ -369,6 +393,7 @@ class Editor
 
                 case null:
                     break;
+                
                 default:
                     $this->term->setCursor(1, $h, true);
                     echo sprintf("%s %02x %03d", ctype_print($read)?$read:'.', ord($read), ord($read));
@@ -476,75 +501,68 @@ class Editor
 
     }
 
+    private function doOpenFile()
+    {
+        $wd = getcwd();
+        while (true) {
+            $items = [
+                dirname($wd) => sprintf(
+                    "%-30s %10s %20s",
+                    "Parent Directory",
+                    "<DIR>",
+                    "-"
+                )
+            ];
+            $files = glob($wd."/*");
+            foreach ($files as $file) {
+                $items[$file] = sprintf(
+                    "%-30s %10s %20s",
+                    is_dir($file) ? ("<".basename($file).">") : (basename($file)),
+                    is_dir($file) ? "<DIR>" : filesize($file),
+                    date("Y-m-d H:i:s", filemtime($file))
+                );
+            }
+            $menu = new Menu($this->term, $items, $wd);
+            $sel = $menu->display(0, 0, 70, 20, null);
+            if ($sel === null) {
+                $this->redrawEditor();
+                return;
+            }
+            if (is_dir($sel)) {
+                $wd = $sel;
+            }
+            if (is_file($sel)) {
+                $body = file_get_contents($sel);
+                $json = json_decode($body);
+                if ($json !== null) {
+                    $this->loadDocument($json);
+                    break;
+                }
+                try {
+                    $yaml = Yaml::parse($body);
+                    $this->loadDocument($yaml);
+                    break;
+                } catch (ParseException $e) {
+                    $this->showMessage("\e[41;93mUnsupported file format");
+                }
+            }
+        }
+        $this->filename = $sel;
+        $this->shortfilename = basename($sel);
+        $this->redrawEditor();
+        $this->showMessage("\e[42;97mOpened {$this->shortfilename}");
+    }
+
     private function doShowHelp(): void
     {
         [$w,$h] = $this->term->getSize();
 
-        $text = <<<EOT
-        Welcome to JSONEdit! The editor you have missed all this time without even knowing it!
-
-        # QuickStart
-
-        To get started, press I (shift-i) and add something to the document. Use the arrow keys to get around. To cancel a prompt, close a menu or close a dialog, press ctrl-C. When you are happy with your work, press ctrl-W and enter a filename to write. You can also press ctrl-R and read in a new file, overwriting your masterpiece.
-
-        ## Useful keys
-
-           ↑↓  Navigate values in document
-            h  Show this help
-            H  Show information about the app and license
-            i  Insert a new value
-            I  Insert value, array or object
-            e  Edit selected value
-            E  Edit selected key
-            D  Delete selected key
-            c  Toggle compact list view
-            q  Toggle quoted keys in list view
-           ^W  Write to file
-           ^R  Read from file
-           ^N  New document with empty object
-           ^C  Cancel/Exit
-        
-        ## 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
-
-        This is beta software, if not alpha. It kinda works, but there will be issues. Feel free to help out with a patch, or by filing bug reports.
-        Known issues include:
-
-        * Comments are not preserved.
-        * Files are overwritten without confirmation.
-        * There is no command mode, no search.
-        * Some things just don't work yet.
-        * Unhandled keys will appear in the bottom left of the screen with a delay.
-        * There are crashes, and lock-ups. Data corruption is a possibility.
-
-        # Support
-
-        Go to https://dev.noccylabs.info/noccy/jsonedit to find the source code, issue tracker, and learn more about the project!
-        EOT;
-
         $width = min(90, $w - 10);
         $height = min(40, $h - 6);
         $left = round(($w / 2) - ($width / 2));
         $top = round(($h / 2) - ($height / 2));
 
-        $msg = new MessageBox($this->term, $text, "Help");
+        $msg = new MessageBox($this->term, self::$helpText, "Help");
         $this->redrawInfoBar([ '↑/↓' => 'Scroll', '^C' => 'Close' ]);
         $msg->display($left, $top, $width, $height);
         $this->redrawEditor();
@@ -622,7 +640,14 @@ class Editor
         if ($node instanceof ValueNode) {
             $val = json_encode($node->value, JSON_UNESCAPED_SLASHES);
             $newVal = $this->ask("\e[33;1mnew value:\e[0m ", $val);
+            // We get null on ctrl-C, so non-null is input
             if ($newVal !== null) {
+                // Break out if the value has not changed
+                if ($newVal === $val) {
+                    $this->redrawInfoBar();
+                    return;
+                }
+                // Attempt to decode the value
                 $val = json_decode($newVal);
                 // If the string decodes to null, but isn't 'null', treat it as a string
                 if ($val === null && $newVal !== 'null') {
@@ -815,7 +840,9 @@ class Editor
 
         $path = $this->list->getPathForIndex($this->currentRow);
         $node = $this->list->getNodeForIndex($this->currentRow);
-        
+
+        ob_start();
+
         $modified = $this->modified ? "\e[31m*\e[37m" : "";
         $this->term->setCursor(1, $h-1);
         echo "\e[40;37m\e[K{$modified}\e[1m{$this->shortfilename}\e[22m#\e[3m{$path}\e[37;23m";
@@ -841,6 +868,8 @@ class Editor
         }
         // $this->term->setCursor(1, 1);
         // echo "\e[90;3m«Empty»\e[0m";
+
+        ob_end_flush();
     }
 
     /**
@@ -902,3 +931,63 @@ class Editor
     }
 
 }
+
+Editor::$helpText = <<<EOT
+Welcome to JSONEdit! The editor you never knew you were missing!
+
+# QuickStart
+
+To get started, press I (shift-i) and add something to the document. Use the arrow keys to get around. To cancel a prompt, close a menu or close a dialog, press ctrl-C. When you are happy with your work, press ctrl-W and enter a filename to write. You can also press ctrl-R and read in a new file, overwriting your masterpiece.
+
+# Useful keys
+
+### Main Window
+
+   ↑↓  Navigate values in document
+    h  Show this help
+    H  Show information about the app and license
+    i  Insert a new value
+    I  Insert value, array or object
+    e  Edit selected value
+    E  Edit selected key
+Enter  Edit string/number, toggle booleans
+    D  Delete selected key
+    c  Toggle compact list view
+    q  Toggle quoted keys in list view
+   ^W  Write to file
+   ^R  Read from file
+   ^O  Open file browser
+   ^N  New document with empty object
+   ^X  Exit
+
+### Dialogs/Menus
+
+   ↑↓  Select/Scroll
+Enter  Select value
+   ^C  Cancel
+
+# 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
+This is beta software, if not alpha. It kinda works, but there will be issues. Feel free to help out with a patch, or by filing bug reports.
+Known issues include:
+
+# Support
+Go to https://dev.noccylabs.info/noccy/jsonedit to find the source code, issue tracker, and learn more about the project!
+EOT;
diff --git a/src/List/TreeList.php b/src/List/TreeList.php
index fa5b6d9..08a2871 100644
--- a/src/List/TreeList.php
+++ b/src/List/TreeList.php
@@ -241,7 +241,7 @@ class TreeList implements Countable, IteratorAggregate
                 'string' => "\e[33m",
                 'integer' => "\e[94m",
                 'double' => "\e[96m",
-                'boolean' => "\e[35m",
+                'boolean' => ($value?"\e[92m":"\e[32m"),
                 'NULL' => "\e[31m",
                 default => "",
             };