diff --git a/kilo b/kilo
index 1fa1c2b..e271952 100755
--- a/kilo
+++ b/kilo
@@ -20,18 +20,20 @@ function main(int $argc, array $argv): int
 		$editor->open($argv[1]);
 	}
 
-	$editor->setStatusMessage("HELP: Ctrl-Q = quit");
+	$editor->setStatusMessage('HELP: Ctrl-Q = quit');
 
 	// Input Loop
 	while (true)
 	{
 		$editor->refreshScreen();
+
+		// Spin while waiting for a keypress
 		$char = $editor->processKeypress();
 		while ($char === '')
 		{
 			$char = $editor->processKeypress();
 		}
-		
+
 		if ($char === NULL)
 		{
 			break;
diff --git a/src/Editor.php b/src/Editor.php
index 38c538c..9bb66ee 100644
--- a/src/Editor.php
+++ b/src/Editor.php
@@ -22,10 +22,10 @@ trait MagicProperties {
 }
 
 class Key {
-	public const ARROW_LEFT = 'ARROW_LEFT';
-	public const ARROW_RIGHT = 'ARROW_RIGHT';
-	public const ARROW_UP = 'ARROW_UP';
-	public const ARROW_DOWN = 'ARROW_DOWN';
+	public const ARROW_LEFT = 'a';//'ARROW_LEFT';
+	public const ARROW_RIGHT = 'd';//ARROW_RIGHT';
+	public const ARROW_UP = 'w';//'ARROW_UP';
+	public const ARROW_DOWN = 's';//'ARROW_DOWN';
 	public const DEL_KEY = 'DEL';
 	public const HOME_KEY = 'HOME';
 	public const END_KEY = 'END';
@@ -327,7 +327,7 @@ class Editor {
 		{
 			$this->rowOffset = $this->cursorY;
 		}
-		if ($this->cursorY >= $this->rowOffset + $this->screenRows)
+		if ($this->cursorY >= ($this->rowOffset + $this->screenRows))
 		{
 			$this->rowOffset = $this->cursorY - $this->screenRows + 1;
 		}
@@ -337,7 +337,7 @@ class Editor {
 		{
 			$this->colOffset = $this->renderX;
 		}
-		if ($this->renderX >= $this->colOffset + $this->screenCols)
+		if ($this->renderX >= ($this->colOffset + $this->screenCols))
 		{
 			$this->colOffset = $this->renderX - $this->screenCols + 1;
 		}
@@ -348,7 +348,7 @@ class Editor {
 		for ($y = 0; $y < $this->screenRows; $y++)
 		{
 			$filerow = $y + $this->rowOffset;
-			if ($filerow >= count($this->rows))
+			if ($filerow >= $this->numRows)
 			{
 				if ($this->numRows === 0 && $y === $this->screenRows / 3)
 				{
@@ -365,7 +365,7 @@ class Editor {
 						$this->ab .= '~';
 						$padding--;
 					}
-					while ($padding--)
+					for (; $padding >= 0; $padding--)
 					{
 						$this->ab .= ' ';
 					}
@@ -402,8 +402,8 @@ class Editor {
 		$this->ab .= "\x1b[7m";
 
 		$statusFilename = $this->filename !== '' ? $this->filename : '[No Name]';
-		$status = sprintf("%.20s - %d lines", $statusFilename, count($this->rows));
-		$rstatus = sprintf("%d/%d", $this->cursorY + 1, count($this->rows));
+		$status = sprintf("%.20s - %d lines", $statusFilename, $this->numRows);
+		$rstatus = sprintf("%d/%d", $this->cursorY + 1, $this->numRows);
 		$len = strlen($status);
 		$rlen = strlen($rstatus);
 		if ($len > $this->screenCols)
@@ -573,6 +573,9 @@ class Editor {
 				write_stdout("\x1b[H"); // Reposition cursor to top-left
 				return NULL;
 			break;
+
+			default:
+				return $c;
 		}
 
 		return $c;
@@ -595,7 +598,7 @@ class Editor {
 		}
 
 		$times = $this->screenRows;
-		while ($times--)
+		for (; $times > 0; $times--)
 		{
 			$this->moveCursor($c === Key::PAGE_UP ? Key::ARROW_UP : Key::ARROW_DOWN);
 		}
diff --git a/src/constants.php b/src/constants.php
index e345ff6..85bbff1 100644
--- a/src/constants.php
+++ b/src/constants.php
@@ -18,7 +18,7 @@ define('STDERR_FILENO', 2);
 define('TCSAFLUSH', 2);
 
 // -----------------------------------------------------------------------------
-// ! Termios bitflags
+// ! Termios flags and constants
 // -----------------------------------------------------------------------------
 
 /* Input modes */
diff --git a/src/functions.php b/src/functions.php
index ebb2896..25b25d0 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -44,6 +44,8 @@ function disableRawMode(): void
 
 	$res = $ffi->tcsetattr(STDIN_FILENO, TCSAFLUSH, FFI::addr($original_termios));
 
+	echo "\n";
+
 	if ($res === -1)
 	{
 		die('tcsetattr');