diff --git a/src/Drivers/AbstractTextModifier.php b/src/Drivers/AbstractTextModifier.php
index cc34e6e3..1e179e3e 100644
--- a/src/Drivers/AbstractTextModifier.php
+++ b/src/Drivers/AbstractTextModifier.php
@@ -17,18 +17,38 @@ use Intervention\Image\Typography\Line;
  */
 abstract class AbstractTextModifier extends DriverSpecialized implements ModifierInterface
 {
+    /**
+     * Calculate size of bounding box of given text
+     *
+     * @return Polygon
+     */
     abstract protected function boxSize(string $text): Polygon;
 
+    /**
+     * Calculates typographical leanding
+     *
+     * @return int
+     */
     public function leadingInPixels(): int
     {
         return intval(round($this->fontSizeInPixels() * $this->font->lineHeight()));
     }
 
+    /**
+     * Calculates typographical cap height
+     *
+     * @return int
+     */
     public function capHeight(): int
     {
         return $this->boxSize('T')->height();
     }
 
+    /**
+     * Calculates the font size in pixels
+     *
+     * @return int
+     */
     public function fontSizeInPixels(): int
     {
         return $this->boxSize('Hy')->height();
@@ -36,8 +56,10 @@ abstract class AbstractTextModifier extends DriverSpecialized implements Modifie
 
     /**
      * Build TextBlock object from text string and align every line
-     * according to text writers font object and position.
+     * according to text modifier's font object and position.
      *
+     * @param Point $position
+     * @param string $text
      * @return TextBlock
      */
     public function alignedTextBlock(Point $position, string $text): TextBlock
@@ -67,6 +89,14 @@ abstract class AbstractTextModifier extends DriverSpecialized implements Modifie
         return $lines;
     }
 
+    /**
+     * Returns bounding box of the given text block according to text modifier's
+     * font settings and given pivot point
+     *
+     * @param TextBlock $block
+     * @param Point|null $pivot
+     * @return Polygon
+     */
     public function boundingBox(TextBlock $block, Point $pivot = null): Polygon
     {
         $pivot = $pivot ? $pivot : new Point();
@@ -89,6 +119,12 @@ abstract class AbstractTextModifier extends DriverSpecialized implements Modifie
         return $box;
     }
 
+    /**
+     * Calculates the width of the given line in pixels
+     *
+     * @param Line $line
+     * @return int
+     */
     private function lineWidth(Line $line): int
     {
         return $this->boxSize((string) $line)->width();
diff --git a/src/Drivers/Gd/Modifiers/TextModifier.php b/src/Drivers/Gd/Modifiers/TextModifier.php
index 7f3f1a37..d9b2237c 100644
--- a/src/Drivers/Gd/Modifiers/TextModifier.php
+++ b/src/Drivers/Gd/Modifiers/TextModifier.php
@@ -59,9 +59,9 @@ class TextModifier extends AbstractTextModifier
     }
 
     /**
-     * Calculate size of bounding box of given text
+     * {@inheritdoc}
      *
-     * @return Polygon
+     * @see AbstractTextModifier::boxSize()
      */
     protected function boxSize(string $text): Polygon
     {
diff --git a/src/Drivers/Imagick/Modifiers/TextModifier.php b/src/Drivers/Imagick/Modifiers/TextModifier.php
index 1be7f92a..97d5a40c 100644
--- a/src/Drivers/Imagick/Modifiers/TextModifier.php
+++ b/src/Drivers/Imagick/Modifiers/TextModifier.php
@@ -6,6 +6,8 @@ namespace Intervention\Image\Drivers\Imagick\Modifiers;
 
 use Imagick;
 use ImagickDraw;
+use ImagickDrawException;
+use ImagickException;
 use ImagickPixel;
 use Intervention\Image\Drivers\AbstractTextModifier;
 use Intervention\Image\Exceptions\FontException;
@@ -48,9 +50,9 @@ class TextModifier extends AbstractTextModifier
     }
 
     /**
-     * Calculate box size of current font
+     * {@inheritdoc}
      *
-     * @return Polygon
+     * @see AbstractTextModifier::boxSize()
      */
     protected function boxSize(string $text): Polygon
     {
@@ -70,6 +72,17 @@ class TextModifier extends AbstractTextModifier
         ));
     }
 
+    /**
+     * Imagick::annotateImage() needs an ImagickDraw object - this method takes
+     * the text color as the base and adds the text modifiers font settings
+     * to the new ImagickDraw object.
+     *
+     * @param null|ImagickPixel $color
+     * @return ImagickDraw
+     * @throws FontException
+     * @throws ImagickDrawException
+     * @throws ImagickException
+     */
     private function toImagickDraw(?ImagickPixel $color = null): ImagickDraw
     {
         if (!$this->font->hasFilename()) {