diff --git a/gadget/4.0/README.md b/gadget/4.0/README.md
index 43cff1289d114a805291d607e720263cb8b02265..0ddae683606e0d800e98c65f8032602972086ed5 100644
--- a/gadget/4.0/README.md
+++ b/gadget/4.0/README.md
@@ -40,21 +40,21 @@ Source code used in the benchmarks (version of June 22, 2021) [./gadget/4.0/gadg
 
 There are two files to obtain from the repository: gadget4.tar.gz and example_ics.tar.gz
 
-gadget4.tar.gz includes the source code, examples, buildsystem, and documentation folders. It also includes Makefile and Makefile.systype (or a template)
+gadget4.tar.gz includes the `src` code, `examples`, `buildsystem`, and `documentation` folders. It also includes **Makefile** and **Makefile.systype** (or a template)
 
-example_ics.tar.gz includes initial conditions that are needed for each of the examples. When untarred you generate a folder named ExampleICs. You may download the examples initial conditions from [./gadget/4.0/example_ics.tar.gz](./gadget/4.0/example_ics.tar.gz)
+example_ics.tar.gz includes initial conditions that are needed for each of the examples. When untarred you generate a folder named `ExampleICs`. You may download the examples initial conditions from [./gadget/4.0/example_ics.tar.gz](./gadget/4.0/example_ics.tar.gz)
 
-1. After decompressing gadget4.tar.gz go to the master folder named gadget4. There are two files that need modification: Makefile.systype and Makefile.
+1. After decompressing gadget4.tar.gz go to the master folder named `gadget4`. There are two files that need modification: **Makefile.systype** and **Makefile**.
 
-a) In the Makefile.systype select one of the system types by uncommenting the corresponding line or add a line with your system, e.g.,
+1. In the **Makefile.systype** select one of the system types by uncommenting the corresponding line or add a line with your system, e.g.,
 ```
 #SYSTYPE="XXX-BBB"
 ```
 where XXX = system name and BBB = whatever you may want to include here, e.g., impi, openmpi, etc.
 
-b) In case you uncommented a line corresponding to your system in the Makefile.systype then there is nothing to do in the Makefile.
+1. In case you uncommented a line corresponding to your system in the **Makefile.systype** then there is nothing to do in the **Makefile**.
 
-c) In case you added a line, say #SYSTYPE="XXX-BBB", into the Makefile.systype then you must modify the Makefile by adding the following lines in 'define available Systems'
+1. In case you added a line, say #SYSTYPE="XXX-BBB", into the **Makefile.systype** then you must modify the **Makefile** by adding the following lines in 'define available Systems'
 
 ```
 ifeq ($(SYSTYPE),"XXX-BBB")
@@ -63,9 +63,9 @@ include buildsystem/Makefile.path.XXX-BBB
 endif
 ```
 
-2. In the folder buildsystem make sure you have the Makefile.comp.XXX and Makefile.path.XXX (XXX = cluster name) set with the proper paths and compilation options, respectively. Either chose the existing files or create new ones that reflect your system paths and compiler.
+2. In the folder `buildsystem` make sure you have the **Makefile.comp.XXX** and **Makefile.path.XXX** (XXX = cluster name) set with the proper paths and compilation options, respectively. Either chose the existing files or create new ones that reflect your system paths and compiler.
 
-3. The folder examples has several subfolders of test cases. From one of these subfolders, e.g., CollidingGalaxiesSFR, copy Config.sh to the master folder.
+3. The folder examples has several subfolders of test cases. From one of these subfolders, e.g., `CollidingGalaxiesSFR`, copy **Config.sh** to the master folder.
 
 4. In the master folder compile the code
 ```
@@ -73,9 +73,9 @@ make CONFIG=Config.sh EXEC=gadget4-exe
 ```
 where EXEC is the name of the executable.
 
-5. Create a folder named `Run_CollidingGalaxies`. Copy gadget4-exe, and the files param.txt and TREECOOL existing in the subfolder CollidingGalaxiesSFR to `Run_CollidingGalaxies`.
+5. Create a folder named `Run_CollidingGalaxies`. Copy **gadget4-exe**, and the files **param.txt** and **TREECOOL** existing in the subfolder `CollidingGalaxiesSFR` to `Run_CollidingGalaxies`.
 
-6. In the folder `Run_CollidingGalaxies` modify param.txt to include the adequate path to the initial conditions file ics_collision_g4.dat located in the folder ExampleICs and modify the memory per core to that of the system you are using.
+6. In the folder `Run_CollidingGalaxies` modify **param.txt** to include the adequate path to the initial conditions file **ics_collision_g4.dat** located in the folder `ExampleICs` and modify the memory per core to that of the system you are using.
 
 7. Run the code using mpirun or submit a SLURM script.