diff --git a/docs/conf.py b/docs/conf.py
index 3aa485feb..55e94f620 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -217,16 +217,16 @@ def setup(app):
 
 latex_elements = {
 # The paper size ('letterpaper' or 'a4paper').
-#'papersize': 'letterpaper',
+'papersize': 'a4paper',
 
 # The font size ('10pt', '11pt' or '12pt').
-#'pointsize': '10pt',
+'pointsize': '10pt',
 
 # Additional stuff for the LaTeX preamble.
 #'preamble': '',
 
 # Latex figure (float) alignment
-#'figure_align': 'htbp',
+'figure_align': 'htbp',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples
diff --git a/docs/index.rst b/docs/index.rst
index c466e6209..4154a454c 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -87,8 +87,8 @@ Features
 
       print_r(iterator_to_array($pipe(new ArrayIterator($data))));  // ['baz', 'bar']
 
-   More information about this in the `Brian Lonsdorf's conference`_, 
-   even if this is for Javascript, 
+   More information about this in the `Brian Lonsdorf's conference`_,
+   even if this is for Javascript,
    those concepts are common to other programming languages.
 
    In a nutshell, the combination of currying and function-first enables
@@ -100,7 +100,7 @@ Features
    makes it easy to compose functions to create new functions. Because
    the API is *function-first*, *data-last*, you can continue composing
    and composing until you build up the function you need before
-   dropping in the data. See `this Hugh Jackson article`_ describing 
+   dropping in the data. See `this Hugh Jackson article`_ describing
    the advantages of this style.
 
    In the following example, the well-known `flatMap`_ could
diff --git a/docs/pages/code/gamma.php b/docs/pages/code/gamma.php
index cfa686bb2..8aa3203c9 100644
--- a/docs/pages/code/gamma.php
+++ b/docs/pages/code/gamma.php
@@ -23,17 +23,17 @@
     }
 };
 
-$ℕ = $listInt(1, static function (int $n): int {
+$N = $listInt(1, static function (int $n): int {
     return $n + 1;
 });
 
-$γ = static function (float $n): Closure {
+$Y = static function (float $n): Closure {
     return static function (int $x) use ($n): float {
         return ($x ** ($n - 1)) * (\M_E ** (-$x));
     };
 };
 
-$ε = static function (float $value): bool {
+$e = static function (float $value): bool {
     return 10 ** -12 > $value;
 };
 
@@ -42,9 +42,9 @@
 // $number = 6; // 5 * 4 * 3 * 2 => 120
 $number = 5.75; // 78.78
 
-$gamma_factorial_approximation = Collection::fromIterable($ℕ)
-    ->map($γ($number))
-    ->until($ε)
+$gamma_factorial_approximation = Collection::fromIterable($N)
+    ->map($Y($number))
+    ->until($e)
     ->foldLeft($addition, 0);
 
 print_r($gamma_factorial_approximation);