diff --git a/cargo-scout-lib/src/config/mod.rs b/cargo-scout-lib/src/config/mod.rs
index 4aa933a..094ca5d 100644
--- a/cargo-scout-lib/src/config/mod.rs
+++ b/cargo-scout-lib/src/config/mod.rs
@@ -1,5 +1,78 @@
 pub mod rust;
 
+/// This trait is responsible for providing a list of members,
+/// which are directories to be linted against.
 pub trait Config {
+    /// This function should return a list of relative paths
+    /// a linter will iterate on.
+    ///
+    /// If only the current working directory must be checked, it must return `vec![".".to_string()]`
+    ///
+    /// If several directories must be checked,
+    /// return their relative path as strings.
+    ///
+    /// For example if your current working directory is `foo`,
+    /// and you want to check `./bar` and `./baz`,
+    /// return `vec!["bar".to_string(), "baz".to_string()]`
+    ///
+    /// # Example with the root directory
+    /// ```
+    /// # use cargo_scout_lib::config::Config;
+    /// # struct CustomConfig{}
+    /// # impl CustomConfig {
+    /// #    fn new() -> Self {
+    /// #        Self {}
+    /// #    }
+    /// # }
+    /// # // Your own implementation goes here
+    /// # impl Config for CustomConfig {
+    /// #    fn get_members(&self) -> Vec<String> {
+    /// #        vec![".".to_string()]
+    /// #    }
+    /// # }
+    /// let config = CustomConfig::new();
+    /// // Only the current directory must be linted
+    /// assert_eq!(vec![".".to_string()], config.get_members());
+    /// ```
+    ///
+    /// # Example with two subdirectories
+    /// ```
+    /// # use cargo_scout_lib::config::Config;
+    /// # struct CustomConfig{}    
+    /// # impl CustomConfig {
+    /// #    fn new() -> Self {
+    /// #        Self {}
+    /// #    }
+    /// # }
+    /// # // Your own implementation goes here
+    /// # impl Config for CustomConfig {
+    /// #    fn get_members(&self) -> Vec<String> {
+    /// #        vec!["foo".to_string(), "bar".to_string()]
+    /// #    }
+    /// # }
+    /// let config = CustomConfig::new();
+    /// // Directories ./foo and ./bar must be linted
+    /// assert_eq!(vec!["foo".to_string(), "bar".to_string()], config.get_members());
+    /// ```
+    ///
+    /// # Implementing your own Config
+    /// ```
+    /// use cargo_scout_lib::config::Config;
+    ///
+    /// struct CustomConfig{}
+    ///
+    /// # impl CustomConfig {
+    /// #   fn new() -> Self {
+    /// #       Self {}
+    /// #   }
+    /// # }
+    /// impl Config for CustomConfig {
+    ///    fn get_members(&self) -> Vec<String> {
+    ///        // Your own code to fetch the list of
+    ///        // directories to iterate on goes here
+    ///        # vec![".".to_string()]
+    ///    }
+    /// }
+    /// ```
     fn get_members(&self) -> Vec<String>;
 }