diff --git a/.divinerconfig b/.divinerconfig
deleted file mode 100644
--- a/.divinerconfig
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  "name" : "libphutil",
-  "src_link" :
-    "https://secure.phabricator.com/diffusion/PHU/browse/master/%f$%l",
-  "groups" : {
-    "overview" : "Overview",
-    "contrib" : "Contributing to libphutil",
-    "working" : "Working with libphutil",
-    "util" : "Core Utilities",
-    "library" : "Phutil Library System",
-    "utf8" : "UTF-8",
-    "internationalization" : "Internationalization",
-    "filesystem" : "Filesystem",
-    "exec" : "Command Execution",
-    "futures" : "Futures",
-    "channel" : "Channels (I/O Wrappers)",
-    "aws" : "Amazon Web Services",
-    "error" : "Error Handling",
-    "markup" : "Markup",
-    "console" : "Console Utilities",
-    "aast" : "Abstract Abstract Syntax Tree",
-    "xhpast" : "XHPAST (PHP/XHP Parser)",
-    "conduit" : "Conduit (Service API)",
-    "event" : "Events",
-    "daemon" : "Daemons",
-    "parser" : "Other Parsers",
-    "testcase" : "Test Cases"
-  },
-  "engines" : [
-    ["DivinerArticleEngine", {}],
-    ["DivinerXHPEngine", {}]
-  ]
-}
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -379,6 +379,7 @@
     'phutil_is_utf8' => 'utils/utf8.php',
     'phutil_is_utf8_with_only_bmp_characters' => 'utils/utf8.php',
     'phutil_is_windows' => 'utils/utils.php',
+    'phutil_json_decode' => 'utils/utils.php',
     'phutil_loggable_string' => 'utils/utils.php',
     'phutil_passthru' => 'future/exec/execx.php',
     'phutil_safe_html' => 'markup/render.php',
diff --git a/src/docs/aws.diviner b/src/docs/article/aws.diviner
rename from src/docs/aws.diviner
rename to src/docs/article/aws.diviner
diff --git a/src/docs/command_execution.diviner b/src/docs/article/command_execution.diviner
rename from src/docs/command_execution.diviner
rename to src/docs/article/command_execution.diviner
diff --git a/src/docs/core_quick_reference.diviner b/src/docs/article/core_quick_reference.diviner
rename from src/docs/core_quick_reference.diviner
rename to src/docs/article/core_quick_reference.diviner
diff --git a/src/docs/developing_xhpast.diviner b/src/docs/article/developing_xhpast.diviner
rename from src/docs/developing_xhpast.diviner
rename to src/docs/article/developing_xhpast.diviner
diff --git a/src/docs/overview.diviner b/src/docs/article/overview.diviner
rename from src/docs/overview.diviner
rename to src/docs/article/overview.diviner
diff --git a/src/docs/using_futures.diviner b/src/docs/article/using_futures.diviner
rename from src/docs/using_futures.diviner
rename to src/docs/article/using_futures.diviner
diff --git a/src/docs/book/libphutil.book b/src/docs/book/libphutil.book
new file mode 100644
--- /dev/null
+++ b/src/docs/book/libphutil.book
@@ -0,0 +1,24 @@
+{
+  "name" : "libphutil",
+  "title" : "libphutil Technical Documentation",
+  "short" : "libphutil Tech Docs",
+  "preface" : "Technical documentation for developers using libphutil.",
+  "root" : "../../../",
+  "uri.source" :
+    "https://secure.phabricator.com/diffusion/PHU/browse/master/%f$%l",
+  "rules" : {
+    "(\\.php$)" : "DivinerPHPAtomizer",
+    "(\\.diviner$)" : "DivinerArticleAtomizer"
+  },
+  "exclude" : [
+    "(^externals/)",
+    "(^scripts/)",
+    "(^support/)",
+    "(^resources/)"
+  ],
+  "groups" : {
+    "overview" : {
+      "name" : "libphutil Overview"
+    }
+  }
+}
diff --git a/src/docs/drafts/dom_datastore.txt b/src/docs/draft/dom_datastore.txt
rename from src/docs/drafts/dom_datastore.txt
rename to src/docs/draft/dom_datastore.txt
diff --git a/src/docs/drafts/javascript_scope_resolution.txt b/src/docs/draft/javascript_scope_resolution.txt
rename from src/docs/drafts/javascript_scope_resolution.txt
rename to src/docs/draft/javascript_scope_resolution.txt
diff --git a/src/docs/drafts/using_exceptions.txt b/src/docs/draft/using_exceptions.txt
rename from src/docs/drafts/using_exceptions.txt
rename to src/docs/draft/using_exceptions.txt
diff --git a/src/docs/drafts/using_queryfx.txt b/src/docs/draft/using_queryfx.txt
rename from src/docs/drafts/using_queryfx.txt
rename to src/docs/draft/using_queryfx.txt