diff --git a/src/uu/tail/src/paths.rs b/src/uu/tail/src/paths.rs
index f608f6f006a..3b1d70a84f4 100644
--- a/src/uu/tail/src/paths.rs
+++ b/src/uu/tail/src/paths.rs
@@ -14,18 +14,23 @@ use std::os::unix::fs::{FileTypeExt, MetadataExt};
 use std::path::{Path, PathBuf};
 use uucore::error::UResult;
 
+/// The kind of input, either a `File` or `Stdin` defining an [`Input`]  .
 #[derive(Debug, Clone)]
 pub enum InputKind {
     File(PathBuf),
     Stdin,
 }
 
+/// Represent an input from the command line arguments.
+///
+/// Is composed of an [`InputKind`] and a display name.
 #[derive(Debug, Clone)]
 pub struct Input {
     kind: InputKind,
     pub display_name: String,
 }
 
+// TODO: move above Input
 pub enum Opened {
     File(File),
     Fifo(File),