diff --git a/Cargo.toml b/Cargo.toml
index 50ebc4d..358689a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ include = ["Cargo.toml", "README.md", "LICENSE", "ACKNOWLEDGEMENTS", "src/**/*.r
 build = "build.rs" # LALRPOP preprocessing
 
 [lib]
-name = "parser"
+name = "mercator_parser"
 path = "src/lib.rs"
 
 [[bin]]
diff --git a/src/lib.rs b/src/lib.rs
index b862165..04280f6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,17 +1,57 @@
 #![forbid(unsafe_code)]
 
+//! # Mercator Parser
+//!
+//! Query parser for Mercator.
+//!
+//! ## Mercator: Spatial Index
+//!
+//! **Mercator** is a spatial *volumetric* index for the
+//! [Human Brain Project]. It is a component of the [Knowledge Graph]
+//! service, which  provides the spatial anchoring for the metadata
+//! registered as well as processes the volumetric queries.
+//!
+//! It is build on top of the Iron Sea database toolkit.
+//!
+//! ## Iron Sea: Database Toolkit
+//! **Iron Sea** provides a set of database engine bricks, which can be
+//! combined and applied on arbitrary data structures.
+//!
+//! Unlike a traditional database, it does not assume a specific
+//! physical structure for the tables nor the records, but relies on the
+//! developer to provide a set of extractor functions which are used by
+//! the specific indices provided.
+//!
+//! This enables the index implementations to be agnostic from the
+//! underlying data structure, and re-used.
+//!
+//! [Human Brain Project]: http://www.humanbrainproject.eu
+//! [Knowledge Graph]: http://www.humanbrainproject.eu/en/explore-the-brain/search/
+
 #[macro_use]
 extern crate lalrpop_util;
 
 lalrpop_mod!(#[allow(clippy::all,unused_parens)] pub queries); // synthesized by LALRPOP
 
+// Note: We do not enable for the whole library deny(missing_docs), as
+//       it requires the automatically generated parser to be documented
+//       as well.
+//       Instead we enable it per modules below, except for the tests.
+
+#[warn(missing_docs)]
 mod evaluators;
+#[warn(missing_docs)]
 mod executors;
+#[warn(missing_docs)]
 mod expressions;
+#[warn(missing_docs)]
 mod predictors;
+#[warn(missing_docs)]
 mod validators;
 
+#[warn(missing_docs)]
 mod symbols;
+#[warn(missing_docs)]
 mod types;
 
 pub use expressions::Executor;