diff --git a/README_MacOS.md b/README_MacOS.md
index 9583cda2..4e838ee9 100644
--- a/README_MacOS.md
+++ b/README_MacOS.md
@@ -3,42 +3,47 @@ In order to compile xschem properly on MacOS, we always need to reference the X
 and change some compilation variables. The following dependencies are required:
 - XQuartz: https://www.xquartz.org/releases/XQuartz-2.7.11.html
 - Tcl: https://prdownloads.sourceforge.net/tcl/tcl8.6.10-src.tar.gz
-- Tk: https://prdownloads.sourceforge.net/tcl/tk8.6.10-src.tar.gz
+- Tk: https://prdownloads.sourceforge.net/tcl/tk8.6.10-src.tar.gz  
+
 The first step is to install XQuartz and then compile Tcl and Tk. Nothing special on compiling these two, but
 we need to specify the X libraries from XQuartz when compiling Tk. Let's use the path
 /usr/local/opt/tcl-tk as destination folder.
 ## Tcl compilation
 Extract the Tcl sources and then go to the unix folder:
 
-cd <extracted-folder>/unix
-./configure --prefix=/usr/local/opt/tcl-tk
-make
-make install
-Tk compilati on
+`cd <extracted-folder>/unix`  
+`./configure --prefix=/usr/local/opt/tcl-tk`  
+`make`
+`make install`  
+
+## Tk compilation
 Same procedure as Tcl, but we need to specificy the Tcl and X libraries paths. XQuartz is installed on
-/opt/X11 , so we do:
-cd <extracted-folder>/unix
-./configure --prefix=/usr/local/opt/tcl-tk --with-tcl=/usr/local/opt/tcl-
-tk/lib --with-x --x-includes=/opt/X11/include --x-libraries=/opt/X11/lib
-make
-make install
-xschem compilati on
+/opt/X11 , so we do:  
+`cd <extracted-folder>/unix`  
+`./configure --prefix=/usr/local/opt/tcl-tk \
+--with-tcl=/usr/local/opt/tcl-tk/lib --with-x \
+--x-includes=/opt/X11/include --x-libraries=/opt/X11/lib`  
+`make`  
+`make install`  
+
+##xschem compilation
 Besides referencing the X libraries, we need to also point to the Tcl/Tk installation path. Let's use a recent
-xschem repository and install it on ~/xschem-macos (adapt this to your username):
-git clone https://github.com/StefanSchippers/xschem.git
-cd xschem
-./configure --prefix=/Users/$(whoami)/xschem-macos
-1 / 2README.md
-12/8/2020
-Before running compile the application, we need to adjust Makefile.conf because the current configure
+xschem repository and install it on ~/xschem-macos (adapt this to your username):  
+`git clone https://github.com/StefanSchippers/xschem.git`  
+`cd xschem`  
+`./configure --prefix=/Users/$(whoami)/xschem-macos`  
+
+Before building the application, we need to adjust `Makefile.conf` because the current configure
 script doesn't support custom flags. So we need to replace the CFLAGS and LDFLAGS variables in that file
-as below:
-CFLAGS=-I/opt/X11/include -I/opt/X11/include/cairo -I/usr/local/opt/tcl-
-tk/include -O2
-LDFLAGS=-L/opt/X11/lib -L/usr/local/opt/tcl-tk/lib -lm -lcairo -lX11 -
-lXrender -lxcb -lxcb-render -lX11-xcb -lXpm -ltcl8.6 -ltk8.6
-Finally, we compile and install the application.
-make
-make install
+as below:  
+`CFLAGS=-I/opt/X11/include -I/opt/X11/include/cairo \
+-I/usr/local/opt/tcl-tk/include -O2
+LDFLAGS=-L/opt/X11/lib -L/usr/local/opt/tcl-tk/lib -lm -lcairo \
+-lX11 -lXrender -lxcb -lxcb-render -lX11-xcb -lXpm -ltcl8.6 -ltk8.6`  
+
+Finally, we compile and install the application.  
+`make
+make install`  
+
 The application will be placed in /Users/$(whoami)/xschem-macos/bin and can be started with
 ./xschem in that folder.