diff --git a/report/document.pdf b/report/document.pdf
index c53e75d..edcb060 100644
Binary files a/report/document.pdf and b/report/document.pdf differ
diff --git a/report/document.tex b/report/document.tex
index 2dd6b7d..24a5fbd 100644
--- a/report/document.tex
+++ b/report/document.tex
@@ -311,6 +311,8 @@ The \texttt{Task} class can support matrixes of different element type rather th
 
 The \texttt{Writer} instead writes to disk the task to the same folder, overwriting existing files if present.
 
+The \texttt{Stencil} class divides the matrix in rougly equal parts and distributes them to other workers.
+
 %% - - - - - - - - - - - - - - - - - - %%
 \subsection{Native C++ Threads}
 
@@ -335,10 +337,10 @@ The structure of the implementation with native C++ threads is as follows:
   \end{algorithmic}
 
   \begin{algorithmic}[1]
-    \Procedure{lambda}{$l, \Delta$}\Comment \textit{$l$ is the thread number, $\Delta$ is the ammount of rows to process}
+    \Procedure{lambda}{$l, \Delta$}\Comment \textit{$l$ is the index of block of rows, $\Delta$ is the number of rows}
       \For{$x \in \{l \cdot \Delta, \ldots, (l+1) \cdot \Delta - 1\}$}
         \For{$y \in \{0, \ldots, Columns\}$}
-          \If $(x, y)$ not in the border
+          \If{$(x, y)$ not in the border}
             \State calculate the neighborhood of $(x, y)$
             \State $arena[x][y] = Stencil(neighborhood)$
           \EndIf
@@ -379,7 +381,7 @@ A custom emitter and collector would not have been faster and so the simpler app
   \begin{algorithmic}[1]
     \Procedure{lambda}{$x$}
       \For{$y \in \{0, \ldots, Columns\}$}
-        \If $(x, y)$ not in the border
+        \If {$(x, y)$ not in the border}
           \State calculate the neighborhood of $(x, y)$
           \State $arena[x][y] = Stencil(neighborhood)$
         \EndIf