diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72c76b7..2222f7b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,17 +1,18 @@
 # Change Log for rib
 
-## 0.6.0.0 - UNRELEASED
+## 0.6.0.0
 
 - Advance nixpkgs; require Shake >=0.18.4
-- Significant API simplication: no more type class!
-  - Allows user to specify their own markup parser as a Haskell function
-  - Dropped namings "Document" and "Markup" in favour of "Source"
+- Major API simplication: no more type class!
+  - Allow user to specify their own source parser as a Haskell function
+  - Removed types `Document` and `Markup` in favour of `Source`
   - Expose `ribInputDir` and `ribOutputDir` for use in custom Shake actions
 - Bug fixes:
   - #63: create intermediate directories when generating post HTML
   - #70: Don't crash on Shake errors
   - Fix unnecessary rebuild of all files when only one file changed
     - #66: Use caching (via Shake's `cacheActionWith`), to avoid writing HTML to disk until it has changed.
+
 ## 0.5.0.0
 
 This release comes with a major API refactor. Key changes:
diff --git a/src/Rib/App.hs b/src/Rib/App.hs
index 3b4341b..74750a5 100644
--- a/src/Rib/App.hs
+++ b/src/Rib/App.hs
@@ -5,7 +5,7 @@
 
 -- | CLI interface for Rib.
 --
--- Typically you would call `Rib.App.run` passing your Shake build action.
+-- Mostly you would only need `Rib.App.run`, passing it your Shake build action.
 module Rib.App
   ( App (..),
     run,
diff --git a/src/Rib/Parser/MMark.hs b/src/Rib/Parser/MMark.hs
index 7417508..8e48858 100644
--- a/src/Rib/Parser/MMark.hs
+++ b/src/Rib/Parser/MMark.hs
@@ -8,6 +8,7 @@
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE ViewPatterns #-}
 
+-- | Parsing Markdown using the mmark parser.
 module Rib.Parser.MMark
   ( -- * Parsing
     parse,
@@ -44,7 +45,7 @@ render = MMark.render
 
 -- | Pure version of `parse`
 parsePure ::
-  -- | Filepath corresponding to the text to be parsed (used in parse errors)
+  -- | Filepath corresponding to the text to be parsed (used only in parse errors)
   FilePath ->
   -- | Text to be parsed
   Text ->
diff --git a/src/Rib/Parser/Pandoc.hs b/src/Rib/Parser/Pandoc.hs
index 824740c..706e2b6 100644
--- a/src/Rib/Parser/Pandoc.hs
+++ b/src/Rib/Parser/Pandoc.hs
@@ -48,7 +48,7 @@ parsePure textReader s =
   first show $ runExcept $ do
     runPure' $ textReader readerSettings s
 
--- `SourceReader` for parsing a lightweight markup language using Pandoc
+-- | `SourceReader` for parsing a lightweight markup language using Pandoc
 parse ::
   -- | The pandoc text reader function to use, eg: `readMarkdown`
   (ReaderOptions -> Text -> PandocIO Pandoc) ->
@@ -69,6 +69,7 @@ render doc =
     $ fmap toHtmlRaw
     $ writeHtml5String writerSettings doc
 
+-- | Extract the Pandoc metadata as JSON value
 extractMeta :: Pandoc -> Maybe (Either Text Value)
 extractMeta (Pandoc meta _) = flattenMeta meta
 
diff --git a/src/Rib/Shake.hs b/src/Rib/Shake.hs
index ae35234..7e9613b 100644
--- a/src/Rib/Shake.hs
+++ b/src/Rib/Shake.hs
@@ -6,15 +6,17 @@
 {-# LANGUAGE ViewPatterns #-}
 
 -- | Combinators for working with Shake.
---
--- See the source of `Rib.Simple.buildAction` for example usage.
 module Rib.Shake
   ( -- * Basic helpers
-    readSource,
     buildStaticFiles,
     buildHtmlMulti,
     buildHtml,
     buildHtml_,
+
+    -- * Reading only
+    readSource,
+
+    -- * Writing only
     writeHtml,
 
     -- * Misc
@@ -34,6 +36,7 @@ import Path.IO
 import Relude
 import Rib.Source
 
+-- | RibSettings is initialized with the values passed to `Rib.App.run`
 data RibSettings
   = RibSettings
       { _ribSettings_inputDir :: Path Rel Dir,
@@ -41,6 +44,7 @@ data RibSettings
       }
   deriving (Typeable)
 
+-- | Get rib settings from a shake Action monad.
 ribSettings :: Action RibSettings
 ribSettings = getShakeExtra >>= \case
   Just v -> pure v
@@ -61,7 +65,7 @@ ribOutputDir = do
   liftIO $ createDirIfMissing True output
   return output
 
--- | Shake action to copy static files as is
+-- | Shake action to copy static files as is.
 buildStaticFiles :: [Path Rel File] -> Action ()
 buildStaticFiles staticFilePatterns = do
   input <- ribInputDir
@@ -77,7 +81,7 @@ buildStaticFiles staticFilePatterns = do
 readSource ::
   -- | How to parse the source
   SourceReader repr ->
-  -- | Path to the source file relative to `ribInputDir`
+  -- | Path to the source file (relative to `ribInputDir`)
   Path Rel File ->
   Action repr
 readSource sourceReader k = do
@@ -96,9 +100,9 @@ readSource sourceReader k = do
 
 -- | Convert the given pattern of source files into their HTML.
 buildHtmlMulti ::
-  -- | How to parse the source
+  -- | How to parse the source file
   SourceReader repr ->
-  -- | Source file patterns
+  -- | Source file patterns (relative to `ribInputDir`)
   [Path Rel File] ->
   -- | How to render the given source to HTML
   (Source repr -> Html ()) ->
@@ -116,8 +120,9 @@ buildHtmlMulti parser pats r = do
 -- Also explicitly takes the output file path.
 buildHtml ::
   SourceReader repr ->
-  -- | Path to the HTML file, relative to `ribOutputDir`
+  -- | Path to the output HTML file (relative to `ribOutputDir`)
   Path Rel File ->
+  -- | Path to the source file (relative to `ribInputDir`)
   Path Rel File ->
   (Source repr -> Html ()) ->
   Action (Source repr)
@@ -126,6 +131,7 @@ buildHtml parser outfile k r = do
   writeHtml outfile $ r src
   pure src
 
+-- | Like `buildHtml` but discards its result.
 buildHtml_ ::
   SourceReader repr ->
   Path Rel File ->
diff --git a/src/Rib/Source.hs b/src/Rib/Source.hs
index 0439a66..a2c3376 100644
--- a/src/Rib/Source.hs
+++ b/src/Rib/Source.hs
@@ -14,8 +14,8 @@ module Rib.Source
 
     -- * Source properties
     sourcePath,
-    sourceVal,
     sourceUrl,
+    sourceVal,
   )
 where
 
@@ -27,15 +27,14 @@ import Relude
 -- | A source file on disk
 data Source repr
   = Source
-      { -- | Path to the source; relative to `ribInputDir`
-        _source_path :: Path Rel File,
-        -- | Path to the generated HTML file; relative to `ribOutputDir`
+      { _source_path :: Path Rel File,
+        -- | Path to the generated HTML file (relative to `Rib.Shake.ribOutputDir`)
         _source_builtPath :: Path Rel File,
-        -- | Parsed representation of the source.
         _source_val :: repr
       }
   deriving (Generic, Functor)
 
+-- | Path to the source file (relative to `Rib.Shake.ribInputDir`)
 sourcePath :: Source repr -> Path Rel File
 sourcePath = _source_path
 
@@ -49,6 +48,7 @@ sourceUrl = stripIndexHtml . relPathToUrl . _source_builtPath
         then T.dropEnd (T.length $ "index.html") s
         else s
 
+-- | Parsed representation of the source.
 sourceVal :: Source repr -> repr
 sourceVal = _source_val