@@ -42,7 +42,15 @@ require 'libpath'
 
 ## Components
 
-T.B.C.
+The main components of **libpath.Ruby** are:
+
+* **`LibPath::Form`** — path-form classification and probes (`classify_path`, `path_is_absolute?`, `path_is_homed?`, `path_is_rooted?`, `name_is_malformed?`);
+* **`LibPath::Path::ParsedPath`** — structured parse of a path string into directory / file / search-relative attributes (platform-selected Unix or Windows implementation);
+* **`LibPath::Util`** — path combination and rewriting (`combine_paths`, `derive_relative_path`, `make_compare_path`, `make_path_absolute`, `make_path_canonical`);
+* **`LibPath::Constants`** — platform path-name / path / shell character constants;
+* **`LibPath::Exceptions`** — path-related exceptions such as `MalformedNameException`;
+
+Platform-specific details live under `::Unix` / `::Windows` submodules; the top-level `Form`, `Path`, and `Util` modules select the ambient OS automatically.
 
 
 ## Examples