diff --git a/3_first_steps_in_a_terminal.Rmd b/3_first_steps_in_a_terminal.Rmd
index a4b7be59922d4a6ca317d9a85de2cd69d9991524..77380cf6b756d4923aec39b68111f5eb352d9159 100644
--- a/3_first_steps_in_a_terminal.Rmd
+++ b/3_first_steps_in_a_terminal.Rmd
@@ -33,25 +33,26 @@ You can go to this distribution website and have a look at the list of firms usi
 A command-line interpreter (or shell), is a software designed to read lines of text entered by a user to interact with an OS.
 
 To simplify the shell executes the following infinite loop:
+
 1. read a line
 2. translate this line as a program execution with its parameters
 3. launch the corresponding program with the parameters
 3. wait for the program to finish
 4. Go back to 1.
 
-When you open a terminal on an Unix-like OS, you will have a **prompt** displayed: it can end with a **$** or a **%** character depending on your configuration. As long as you see your prompt, it means that you are in step **1.**, if no prompt is visible, you are in step **4.** or you have set up a very minimalist configuration for your shell.
+When you open a terminal on an Unix-like OS, you will have a **prompt** displayed: it can end with a `$` or a `%` character depending on your configuration. As long as you see your prompt, it means that you are in step **1.**, if no prompt is visible, you are in step **4.** or you have set up a very minimalist configuration for your shell.
 
 <img src="./img/prompt.png" alt="prompt" style="zoom:150%;" />
 
-The blinking square or vertical bar represents your **cursor**. Shell predates graphical interfaces, so most of the time you won’t be able to move this cursor with your mouse, but with the directional arrows (left and right).
+The blinking square or vertical bar represents your **cursor**. Shell predates graphical interfaces, so most of the time you won’t be able to move this cursor with your mouse, but with the **directional arrows** (left and right).
 
-On the IFB, your prompt is a **$**
+On the IFB, your prompt is a `$`:
 
 ```sh
 etudiant@VM:~$
 ```
 
-You can identify the following information from your prompt: **etudiant** is your login and **VM** is the name of your VM (**~** is where you are on the computer, but we will come back to that later).
+You can identify the following information from your prompt: **etudiant** is your login and **VM** is the name of your VM (`~` is where you are on the computer, i.e. the current working directory, but we will come back to that later).
 
 On Ubuntu 20.04, the default shell is [Bash](https://en.wikipedia.org/wiki/Bash_(Unix_shell)) while on recent version of macOS it’s [zsh](https://en.wikipedia.org/wiki/Z_shell). There are [many different shell](https://en.wikipedia.org/wiki/List_of_command-line_interpreters), for example, Ubuntu 20.04 also has [sh](https://en.wikipedia.org/wiki/Bourne_shell) installed.