FIXED analysis extensions got reset and new ones would be unavailable.

30 files changed, 328 insertions, 199 deletions

diff --git a/documentation/bookmark/Abstract interpretation.md b/documentation/bookmark/abstract_interpretation.md
index d98525f7c..ce790a93b 100644
--- a/documentation/bookmark/Abstract interpretation.md
+++ b/documentation/bookmark/abstract_interpretation.md
@@ -1,4 +1,5 @@
 # Reference
 
+1. [Principles of Abstract Interpretation](https://mitpress.mit.edu/books/principles-abstract-interpretation)
 1. ["Easy Abstract Interpretation with SPARTA" by Arnaud Venet and Jez Ng](https://www.youtube.com/watch?v=_fA7vkVJhF8)
 
diff --git a/documentation/bookmark/back_end/graal.md b/documentation/bookmark/back_end/graal.md
new file mode 100644
index 000000000..bd91d9218
--- /dev/null
+++ b/documentation/bookmark/back_end/graal.md
@@ -0,0 +1,4 @@
+# Reference
+
+1. [Anybody know how the graal project ties in with all of this? Is oracle effective... | Hacker News](https://news.ycombinator.com/item?id=19435964)
+
diff --git a/documentation/bookmark/back_end/haskell.md b/documentation/bookmark/back_end/haskell.md
index aa77d723f..a8621380f 100644
--- a/documentation/bookmark/back_end/haskell.md
+++ b/documentation/bookmark/back_end/haskell.md
@@ -1,4 +1,5 @@
 # Reference
 
+1. [Thunks, Sharing, Laziness: The Haskell Heap Visualized – Joachim Breitner](https://www.youtube.com/watch?v=I4lnCG18TaY)
 1. [Eta - Modern Haskell on the JVM](https://github.com/typelead/eta)
 
diff --git a/documentation/bookmark/back_end/micro_controller.md b/documentation/bookmark/back_end/micro_controller.md
new file mode 100644
index 000000000..2681cbf67
--- /dev/null
+++ b/documentation/bookmark/back_end/micro_controller.md
@@ -0,0 +1,4 @@
+# Reference
+
+1. [HaikuVM](http://haiku-vm.sourceforge.net/)
+
diff --git a/documentation/bookmark/back_end/wasm.md b/documentation/bookmark/back_end/wasm.md
index ba278fb2f..002c0b31d 100644
--- a/documentation/bookmark/back_end/wasm.md
+++ b/documentation/bookmark/back_end/wasm.md
@@ -1,5 +1,6 @@
 # Platform
 
+1. [Wasmer Java](https://github.com/wasmerio/wasmer-java)
 1. [WAVM: WAVM is a WebAssembly virtual machine, designed for use in non-web applications.](https://wavm.github.io/)
 
 # Exemplar
diff --git a/documentation/bookmark/concurrency/ownership.md b/documentation/bookmark/concurrency/ownership.md
new file mode 100644
index 000000000..d9be9959f
--- /dev/null
+++ b/documentation/bookmark/concurrency/ownership.md
@@ -0,0 +1,8 @@
+# Reference
+
+1. []()
+
+# Language
+
+1. [Project Verona: Research programming language for concurrent ownership](https://microsoft.github.io/verona/)
+
diff --git a/documentation/bookmark/database.md b/documentation/bookmark/database.md
index 0e27f89cf..8c07f0279 100644
--- a/documentation/bookmark/database.md
+++ b/documentation/bookmark/database.md
@@ -197,6 +197,7 @@
 
 ## Graph
 
+1. ["Asami: Turn your JSON into a Graph in 2 Lines" by Paula Gearon](https://www.youtube.com/watch?v=-XegX_K6w-o)
 1. https://github.com/hugegraph/hugegraph
 1. https://github.com/Microsoft/GraphEngine
 1. https://redislabs.com/blog/release-redisgraph-v1-0-preview/
diff --git a/documentation/bookmark/game_programming.md b/documentation/bookmark/game_programming.md
index d04e0def1..1865d7dd3 100644
--- a/documentation/bookmark/game_programming.md
+++ b/documentation/bookmark/game_programming.md
@@ -96,6 +96,7 @@
 
 # Reference
 
+1. ["Game Development in Eight Bits" by Kevin Zurawel](https://www.youtube.com/watch?v=TPbroUDHG0s)
 1. [How to Make an RPG](https://howtomakeanrpg.com/)
 1. https://mod.io/
 1. https://www.amazon.com/Game-Engine-Black-Book-Wolfenstein/dp/1539692876
diff --git a/documentation/bookmark/lazy_evaluation.md b/documentation/bookmark/lazy_evaluation.md
index e20487b81..8e9a785fd 100644
--- a/documentation/bookmark/lazy_evaluation.md
+++ b/documentation/bookmark/lazy_evaluation.md
@@ -1,4 +1,5 @@
 # Reference
 
+1. [Promises Are Made to Be Broken: Migrating R to Strict Semantics](http://aviral.io/static/pdfs/promises-are-made-to-be-broken.pdf)
 1. [Call-by-Need Is Clairvoyant Call-by-Value](http://www.cs.nott.ac.uk/~pszgmh/clairvoyant.pdf)
 
diff --git a/documentation/bookmark/math.md b/documentation/bookmark/math.md
index d27280e04..760e4d177 100644
--- a/documentation/bookmark/math.md
+++ b/documentation/bookmark/math.md
@@ -1,3 +1,7 @@
+# Logarithm
+
+1. [Logarithm: The Complete Guide (Theory & Applications)](https://mathvault.ca/logarithm-theory/)
+
 # Ball arithmetic
 
 1. [Ball arithmetic](http://www.texmacs.org/joris/ball/ball.html)
diff --git a/documentation/bookmark/optimization.md b/documentation/bookmark/optimization.md
index 6a773a929..a0492fb9f 100644
--- a/documentation/bookmark/optimization.md
+++ b/documentation/bookmark/optimization.md
@@ -8,6 +8,7 @@
 
 # Compilation
 
+1. [CompilerGym: Making compiler optimizations accessible to all](https://ai.facebook.com/blog/compilergym-making-compiler-optimizations-accessible-to-all)
 1. [Future Directions for Optimizing Compilers](https://arxiv.org/abs/1809.02161)
 
 # Pre-fetching
@@ -24,7 +25,10 @@
 
 # Reference
 
-1. [CompilerGym: Making compiler optimizations accessible to all](https://ai.facebook.com/blog/compilergym-making-compiler-optimizations-accessible-to-all)
+1. [Refterm Lecture Part 1 - Philosophies of Optimization](https://www.youtube.com/watch?v=pgoetgxecw8)
+1. [Optimizations enabled by -ffast-math](https://kristerw.github.io/2021/10/19/fast-math/)
+1. [Simple Code, High Performance](https://www.youtube.com/watch?v=Ge3aKEmZcqY)
+1. [Negotiating with Compilers](https://en.algorithmica.org/hpc/analyzing-performance/compilation/)
 1. [Do Low-level Optimizations Matter?](https://cantrip.org/sortfast.html)
 1. [Inline caching](https://bernsteinbear.com/blog/inline-caching/)
 1. [Weird and Wonderful Division Tricks](https://saml98.github.io/jekyll/update/2020/02/21/weird-division.htmls)
diff --git a/documentation/bookmark/security.md b/documentation/bookmark/security.md
index ba0d282f2..7cfd9bc2a 100644
--- a/documentation/bookmark/security.md
+++ b/documentation/bookmark/security.md
@@ -1,3 +1,11 @@
+# Anti-Debugging
+
+1. [JavaScript AntiDebugging Tricks](https://x-c3ll.github.io/posts/javascript-antidebugging/)
+
+# Supply chain
+
+1. [chainguard](https://chainguard.dev/)
+
 # Restraint | Sand-boxing
 
 1. [JavaScript Restrictor](https://polcak.github.io/jsrestrictor/)
@@ -83,6 +91,7 @@
 
 # Reference
 
+1. [Secure By Design](https://www.amazon.com/Secure-Design-Daniel-Deogun/dp/1617294357)
 1. [Intro to Just-In-Time Access](https://compliance.dev/2021/04/29/introduction-to-just-in-time-access/)
 1. https://www.nomoreransom.org/en/index.html
 1. [Open Source Security Foundation (OpenSSF)](https://openssf.org/)
diff --git a/documentation/bookmark/tool/text_editor.md b/documentation/bookmark/tool/text_editor.md
index 3cd6aea03..c8d43be64 100644
--- a/documentation/bookmark/tool/text_editor.md
+++ b/documentation/bookmark/tool/text_editor.md
@@ -1,3 +1,7 @@
+# Code navigation
+
+1. ["Incremental, zero-config Code Nav using stack graphs" by Douglas Creager](https://www.youtube.com/watch?v=l2R1PTGcwrE)
+
 # Rendering
 
 1. [Text Rendering Hates You](https://gankra.github.io/blah/text-hates-you/)
diff --git a/documentation/bookmark/user_interface/localization_and_internationalization.md b/documentation/bookmark/user_interface/localization_and_internationalization.md
new file mode 100644
index 000000000..35d515e1c
--- /dev/null
+++ b/documentation/bookmark/user_interface/localization_and_internationalization.md
@@ -0,0 +1,4 @@
+# Reference
+
+1. [How to design in every language at once](https://canvatechblog.com/how-to-design-in-every-language-at-once-f2dd66a2780f)
+
diff --git a/documentation/bookmark/browser.md b/documentation/bookmark/web_browser.md
index 5fc699317..cc698019a 100644
--- a/documentation/bookmark/browser.md
+++ b/documentation/bookmark/web_browser.md
@@ -36,6 +36,7 @@
 
 # Reference
 
+1. [Web Browser Engineering](https://browser.engineering/)
 1. [Public Suffix List](https://publicsuffix.org/)
 1. [Public Suffix List Problems](https://github.com/sleevi/psl-problems)
 1. https://www.opera.com/gx
diff --git a/lux-js/commands.md b/lux-js/commands.md
index 5c6da5e51..ddf91109d 100644
--- a/lux-js/commands.md
+++ b/lux-js/commands.md
@@ -10,6 +10,10 @@ cd ~/lux/lux-js/ && lein clean && lein lux auto test
 ```
 cd ~/lux/lux-js/ \
 && lux clean \
+&& lux with js auto build
+
+cd ~/lux/lux-js/ \
+&& lux clean \
 && lux with js build \
 && mv target/program.js lux.js
 
@@ -52,6 +56,6 @@ cd ~/lux/stdlib/ \
 
 ```
 cd ~/lux/lux-js/ \
-&& mvn install:install-file -Dfile=lux.js -DgroupId=com.github.luxlang -DartifactId=lux-js -Dversion=0.7.0-SNAPSHOT -Dpackaging=js
+&& mvn install:install-file -Dfile=target/program.js -DgroupId=com.github.luxlang -DartifactId=lux-js -Dversion=0.6.3-SNAPSHOT -Dpackaging=js
 ```
 
diff --git a/lux-js/project.lux b/lux-js/project.lux
index 5bd0019e2..d64419dd7 100644
--- a/lux-js/project.lux
+++ b/lux-js/project.lux
@@ -1,5 +1,5 @@
 [""
- ["identity" ["com.github.luxlang" "lux-js" "0.6.2"]
+ ["identity" ["com.github.luxlang" "lux-js" "0.6.3-SNAPSHOT"]
   "info" ["url" "https://github.com/LuxLang/lux"
           "scm" "https://github.com/LuxLang/lux.git"
           "licenses" [["name" "Lux License v0.1.2"
@@ -15,14 +15,14 @@
   "repositories" ["https://oss.sonatype.org/content/repositories/snapshots/"
                   "https://oss.sonatype.org/service/local/staging/deploy/maven2/"]
   
-  "dependencies" [["com.github.luxlang" "stdlib" "0.6.2" "tar"]]
+  "dependencies" [... ["com.github.luxlang" "stdlib" "0.6.3" "tar"]
+                  ]
   
   "program" "program"]
 
  "js"
- ["compiler" ["com.github.luxlang" "lux-js" "0.6.1" "js"]
-  "dependencies" [["org.openjdk.nashorn" "nashorn-core" "15.1" "jar"]]]
+ ["compiler" ["com.github.luxlang" "lux-js" "0.6.2" "js"]]
 
  "jvm"
- ["compiler" ["com.github.luxlang" "lux-jvm" "0.6.2" "jar"]
+ ["compiler" ["com.github.luxlang" "lux-jvm" "0.6.3" "jar"]
   "dependencies" [["org.openjdk.nashorn" "nashorn-core" "15.1" "jar"]]]]
diff --git a/stdlib/project.clj b/stdlib/project.clj
index 9cc874af8..e05e908ad 100644
--- a/stdlib/project.clj
+++ b/stdlib/project.clj
@@ -3,7 +3,7 @@
 (def sonatype-releases "https://oss.sonatype.org/service/local/staging/deploy/maven2/")
 (def sonatype-snapshots "https://oss.sonatype.org/content/repositories/snapshots/")
 
-(defproject com.github.luxlang/stdlib #=(identity version)
+(defproject com.github.luxlang/stdlib "0.6.3-SNAPSHOT" ;; #=(identity version)
   :description "Standard library for the Lux programming language."
   
   :url ~repo
diff --git a/stdlib/project.lux b/stdlib/project.lux
index 496763b00..57cc54d90 100644
--- a/stdlib/project.lux
+++ b/stdlib/project.lux
@@ -2,7 +2,7 @@
  [... An optional identity for the project.
   ... It can also be specified or overriden in a non-default profile.
   ... This will be the name given to the project when installed/deployed as a dependency.
-  "identity" ["com.github.luxlang" "stdlib" "0.6.2"]
+  "identity" ["com.github.luxlang" "stdlib" "0.6.3-SNAPSHOT"]
 
   ... Every piece of information, and the whole "info" bundle, are optional.
   "info" ["url" "https://github.com/LuxLang/lux"
@@ -52,7 +52,7 @@
   ]
 
  "js"
- ["compiler" ["com.github.luxlang" "lux-js" "0.6.2" "js"]
+ ["compiler" ["com.github.luxlang" "lux-js" "0.6.3-SNAPSHOT" "js"]
   ... The OS command to use when running JS tests. The default is described below.
   ... "js" ["node" "--stack_size=8192"]
   ]
diff --git a/stdlib/source/library/lux/data/collection/list.lux b/stdlib/source/library/lux/data/collection/list.lux
index 63f3cf3f6..37e944bb8 100644
--- a/stdlib/source/library/lux/data/collection/list.lux
+++ b/stdlib/source/library/lux/data/collection/list.lux
@@ -129,15 +129,15 @@
 (def: .public (split_at n xs)
   (All (_ a)
     (-> Nat (List a) [(List a) (List a)]))
-  (if (n.> 0 n)
-    (case xs
-      {.#End}
-      [{.#End} {.#End}]
-      
-      {.#Item x xs'}
-      (let [[tail rest] (split_at (-- n) xs')]
-        [{.#Item x tail} rest]))
-    [{.#End} xs]))
+  (case n
+    0 [{.#End} xs]
+    _ (case xs
+        {.#End}
+        [{.#End} {.#End}]
+        
+        {.#Item x xs'}
+        (let [[tail rest] (split_at (-- n) xs')]
+          [{.#Item x tail} rest]))))
 
 (def: (split_when' predicate ys xs)
   (All (_ a)
diff --git a/stdlib/source/library/lux/data/format/css.lux b/stdlib/source/library/lux/data/format/css.lux
index c4ac78db3..f4dd728df 100644
--- a/stdlib/source/library/lux/data/format/css.lux
+++ b/stdlib/source/library/lux/data/format/css.lux
@@ -1,26 +1,28 @@
 (.using
-  [library
-   [lux {"-" and}
-    [control
-     ["[0]" maybe]]
-    [data
-     [number
-      ["[0]" nat]]
-     ["[0]" text
-      ["%" format {"+" format}]
-      ["[0]" encoding {"+" Encoding}]]
-     [collection
-      ["[0]" list ("[1]#[0]" functor)]]]
-    [type
-     abstract]
-    [world
-     [net {"+" URL}]]]]
-  ["[0]" / "_"
-   ["[1][0]" selector {"+" Selector Combinator}]
-   ["[1][0]" value {"+" Value Animation Percentage}]
-   ["[1][0]" font {"+" Font}]
-   ["[1][0]" style {"+" Style}]
-   ["[1][0]" query {"+" Query}]])
+ [library
+  [lux {"-" and}
+   [control
+    ["[0]" maybe]]
+   [data
+    ["[0]" text
+     ["%" format {"+" format}]
+     ["[0]" encoding {"+" Encoding}]]
+    [collection
+     ["[0]" list ("[1]#[0]" functor)]]]
+   [math
+    [number
+     ["[0]" nat]]]
+   [type
+    [abstract {"-" Frame}]]
+   [world
+    [net {"+" URL}]]]]
+ ["[0]" / "_"
+  ["[1][0]" selector {"+" Selector Combinator Specializer Generic}]
+  ["[1][0]" value {"+" Value Animation Percentage}]
+  ["[1][0]" property {"+" Property}]
+  ["[1][0]" font {"+" Font}]
+  ["[1][0]" style]
+  ["[1][0]" query {"+" Query}]])
 
 (abstract: .public Common Any)
 (abstract: .public Special Any)
@@ -33,12 +35,15 @@
     (|>> :representation))
 
   (def: .public empty
-    (CSS Common)
+    (CSS Any)
     (:abstraction ""))
 
+  (type: .public Style
+    (List (Ex (_ brand) [(Property brand) (Value brand)])))
+
   (def: .public (rule selector style)
     (-> (Selector Any) Style (CSS Common))
-    (:abstraction (format (/selector.selector selector) "{" (/style.inline style) "}")))
+    (:abstraction (format (/selector.selector selector) "{" (/style.inline (/style.style style)) "}")))
 
   (def: .public char_set
     (-> Encoding (CSS Special))
@@ -65,7 +70,7 @@
                  with_unicode)
           (list#each (function (_ [property value])
                        (format property ": " value ";")))
-          (text.interposed /style.separator)
+          text.together
           (text.enclosed ["{" "}"])
           (format "@font-face")
           :abstraction)))
@@ -81,12 +86,12 @@
                             "")
                           ";")))
 
-  (def: css_separator
+  (def: separator
     text.new_line)
 
   (type: .public Frame
     (Record
-     [#when Percentage
+     [#when (Value Percentage)
       #what Style]))
 
   (def: .public (key_frames animation frames)
@@ -94,33 +99,38 @@
     (:abstraction (format "@keyframes " (/value.value animation) " {"
                           (|> frames
                               (list#each (function (_ frame)
-                                           (format (/value.percentage (value@ #when frame)) " {"
-                                                   (/style.inline (value@ #what frame))
+                                           (format (/value.value (value@ #when frame)) " {"
+                                                   (/style.inline (/style.style (value@ #what frame)))
                                                    "}")))
-                              (text.interposed ..css_separator))
+                              (text.interposed ..separator))
                           "}")))
 
   (template: (!composite <pre> <post>)
-    (:abstraction (format (:representation <pre>) ..css_separator
-                          (:representation <post>))))
+    [(:abstraction
+      (format (:representation <pre>)
+              ..separator
+              (:representation <post>)))])
   
   (def: .public (and pre post)
-    (-> (CSS Any) (CSS Any) (CSS Any))
+    (All (_ kind) (-> (CSS kind) (CSS kind) (CSS kind)))
     (!composite pre post))
 
-  (def: .public (alter combinator selector css)
+  (def: .public (in_context combinator selector css)
     (-> Combinator (Selector Any) (CSS Common) (CSS Common))
     (|> css
         :representation
-        (text.all_split_by ..css_separator)
-        (list#each (|>> (format (/selector.selector (|> selector (combinator (/selector.tag "")))))))
-        (text.interposed ..css_separator)
+        (text.all_split_by ..separator)
+        (list#each (let [prefix (|> selector
+                                    (combinator (/selector.tag ""))
+                                    /selector.selector)]
+                     (|>> (format prefix))))
+        (text.interposed ..separator)
         :abstraction))
 
   (def: .public (dependent combinator selector style inner)
     (-> Combinator (Selector Any) Style (CSS Common) (CSS Common))
     (!composite (..rule selector style)
-                (..alter combinator selector inner)))
+                (..in_context combinator selector inner)))
 
   (template [<name> <combinator>]
     [(def: .public <name>
@@ -130,4 +140,33 @@
     [with_descendants /selector.in]
     [with_children /selector.sub]
     )
+
+  (def: .public (in_case specializer selector css)
+    (All (_ kind)
+      (-> (Specializer kind) (Selector (Generic Any)) (CSS Common) (CSS Common)))
+    (|> css
+        :representation
+        (text.all_split_by ..separator)
+        (list#each (let [prefix (|> selector
+                                    (specializer (:expected (/selector.tag "")))
+                                    /selector.selector)]
+                     (|>> (format prefix))))
+        (text.interposed ..separator)
+        :abstraction))
+
+  (def: .public (specialized combinator selector style inner)
+    (All (_ kind)
+      (-> (Specializer kind) (Selector (Generic Any)) Style (CSS Common) (CSS Common)))
+    (!composite (..rule selector style)
+                (..in_case combinator selector inner)))
+
+  (template [<name> <combinator>]
+    [(def: .public <name>
+       (-> (Selector (Generic Any)) Style (CSS Common) (CSS Common))
+       (..specialized <combinator>))]
+
+    [with_case /selector.and]
+    [with_part /selector.at]
+    [with_element /selector.for]
+    )
   )
diff --git a/stdlib/source/library/lux/data/format/css/property.lux b/stdlib/source/library/lux/data/format/css/property.lux
index 707e3edd3..155297f84 100644
--- a/stdlib/source/library/lux/data/format/css/property.lux
+++ b/stdlib/source/library/lux/data/format/css/property.lux
@@ -1,9 +1,11 @@
 (.using
   [library
-   [lux {"-" All Cursor}
+   [lux {"-" All Location}
     [control
      [parser
       ["s" code]]]
+    [data
+     ["[0]" text]]
     [type
      abstract]
     [macro
@@ -34,7 +36,7 @@
            Display Empty
            Filter
            Flex_Direction Flex_Wrap
-           Font Font_Kerning Font_Size Font_Variant
+           Font Font_Kerning Font_Size Font_Stretch Font_Style Font_Weight Font_Variant
            Grid Grid_Content Grid_Flow Grid_Span Grid_Template
            Hanging_Punctuation Hyphens Isolation
            List_Style_Position List_Style_Type
@@ -333,10 +335,17 @@
      []
      [["font-size"]]]
 
-    [Number
+    [Font_Stretch
      []
-     [["font-size-adjust"]
-      ["opacity"]]]
+     [["font-stretch"]]]
+
+    [Font_Style
+     []
+     [["font-style"]]]
+
+    [Font_Weight
+     []
+     [["font-weight"]]]
 
     [Font_Variant
      []
@@ -388,6 +397,11 @@
      []
      [["list-style-type"]]]
 
+    [Number
+     []
+     [["font-size-adjust"]
+      ["opacity"]]]
+
     [Overflow
      []
      [["overflow"]
diff --git a/stdlib/source/library/lux/data/format/css/query.lux b/stdlib/source/library/lux/data/format/css/query.lux
index 251429815..8251fcb06 100644
--- a/stdlib/source/library/lux/data/format/css/query.lux
+++ b/stdlib/source/library/lux/data/format/css/query.lux
@@ -5,7 +5,7 @@
      [parser
       ["s" code]]]
     [data
-     [text
+     ["[0]" text
       ["%" format {"+" format}]]]
     [macro
      ["[0]" template]
diff --git a/stdlib/source/library/lux/data/format/css/selector.lux b/stdlib/source/library/lux/data/format/css/selector.lux
index bb6656d6e..35893766a 100644
--- a/stdlib/source/library/lux/data/format/css/selector.lux
+++ b/stdlib/source/library/lux/data/format/css/selector.lux
@@ -1,16 +1,17 @@
 (.using
   [library
-   [lux {"-" or and for same? not}
+   [lux {"-" Label or and for same? not}
+    ["[0]" locale {"+" Locale}]
     [data
      ["[0]" text
-      ["%" format {"+" format}]]
+      ["%" format {"+" format}]]]
+    [math
      [number
       ["i" int]]]
     [type
      abstract]
     [macro
-     ["[0]" template]]
-    ["[0]" locale {"+" Locale}]]])
+     ["[0]" template]]]])
 
 (type: .public Label Text)
 
@@ -57,23 +58,23 @@
     [class Class "." Can_Chain]
     )
 
-  (template [<right> <left> <combo> <combinator>+]
+  (template [<right> <left> <combinator>+]
     [(`` (template [<combinator> <name>]
            [(def: .public (<name> right left)
-              (-> (Selector <right>) (Selector <left>) (Selector <combo>))
+              (-> (Selector <right>) (Selector <left>) (Selector Composite))
               (:abstraction (format (:representation left)
                                     <combinator>
                                     (:representation right))))]
 
            (~~ (template.spliced <combinator>+))))]
 
-    [Can_Chain (Generic Any) Can_Chain
+    [Can_Chain (Generic Any)
      [["" and]]]
-    [Unique (Generic Any) Composite
-     [["" for]]]
-    [Specific (Generic Any) Composite
+    [Specific (Generic Any)
      [["" at]]]
-    [Any Any Composite
+    [Unique (Generic Any)
+     [["" for]]]
+    [Any Any
      [["," or]
       [" " in]
       [">" sub]
@@ -81,6 +82,9 @@
       ["~" later]]]
     )
 
+  (type: .public (Specializer kind)
+    (-> (Selector kind) (Selector (Generic Any)) (Selector Composite)))
+
   (type: .public Combinator
     (-> (Selector Any) (Selector Any) (Selector Composite)))
 
@@ -104,7 +108,7 @@
   (template [<kind> <pseudo>+]
     [(`` (template [<name> <pseudo>]
            [(def: .public <name>
-              (Selector Can_Chain)
+              (Selector <kind>)
               (:abstraction <pseudo>))]
 
            (~~ (template.spliced <pseudo>+))))]
@@ -199,8 +203,8 @@
 
       [nth_child ":nth-child"]
       [nth_last_child ":nth-last-child"]
-      [nth_last_of_type ":nth-last-of-type"]
       [nth_of_type ":nth-of-type"]
+      [nth_last_of_type ":nth-last-of-type"]
       )
     )
   )
diff --git a/stdlib/source/library/lux/data/format/css/style.lux b/stdlib/source/library/lux/data/format/css/style.lux
index bd8d26787..8ec6a207f 100644
--- a/stdlib/source/library/lux/data/format/css/style.lux
+++ b/stdlib/source/library/lux/data/format/css/style.lux
@@ -1,14 +1,16 @@
 (.using
-  [library
-   [lux "*"
-    [data
-     [text
-      ["%" format {"+" format}]]]
-    [type
-     abstract]]]
-  ["[0]" // "_"
-   ["[1][0]" value {"+" Value}]
-   ["[1][0]" property {"+" Property}]])
+ [library
+  [lux "*"
+   [data
+    [text
+     ["%" format {"+" format}]]
+    [collection
+     ["[0]" list ("[1]#[0]" mix)]]]
+   [type
+    abstract]]]
+ ["[0]" // "_"
+  ["[1][0]" value {"+" Value}]
+  ["[1][0]" property {"+" Property}]])
 
 (abstract: .public Style
   Text
@@ -17,18 +19,20 @@
     Style
     (:abstraction ""))
 
-  (def: .public separator
-    " ")
-
   (def: .public (with [property value])
     (All (_ brand)
       (-> [(Property brand) (Value brand)]
           (-> Style Style)))
     (|>> :representation
-         (format (//property.name property) ": " (//value.value value) ";" ..separator)
+         (format (//property.name property) ": " (//value.value value) ";")
          :abstraction))
 
   (def: .public inline
     (-> Style Text)
     (|>> :representation))
+
+  (def: .public (style config)
+    (-> (List (Ex (_ brand) [(Property brand) (Value brand)]))
+        Style)
+    (list#mix ..with ..empty config))
   )
diff --git a/stdlib/source/library/lux/data/format/css/value.lux b/stdlib/source/library/lux/data/format/css/value.lux
index a68d0b263..9b2de87f3 100644
--- a/stdlib/source/library/lux/data/format/css/value.lux
+++ b/stdlib/source/library/lux/data/format/css/value.lux
@@ -1,58 +1,59 @@
 (.using
-  [library
-   [lux {"-" All Cursor and static false true}
-    [control
-     ["[0]" maybe]
-     [parser
-      ["s" code]]]
-    [data
-     ["[0]" color]
-     ["[0]" product]
-     [number
-      ["n" nat]
-      ["i" int]
-      ["r" rev]
-      ["f" frac]]
-     ["[0]" text
-      ["%" format {"+" Format format}]]
-     [collection
-      ["[0]" list ("[1]#[0]" functor)]]]
-    [type
-     abstract]
-    [macro
-     ["[0]" template]
-     ["[0]" code]
-     [syntax {"+" syntax:}]]
-    [world
-     [net {"+" URL}]]]]
-  [//
-   [selector {"+" Label}]])
-
-(syntax: (text_symbol [symbol s.text])
+ [library
+  [lux {"-" Label All Location and static false true}
+   [control
+    ["[0]" maybe]
+    [parser
+     ["<[0]>" code]]]
+   [data
+    ["[0]" color]
+    ["[0]" product]
+    ["[0]" text
+     ["%" format {"+" Format format}]]
+    [collection
+     ["[0]" list ("[1]#[0]" functor)]]]
+   [macro
+    [syntax {"+" syntax:}]
+    ["[0]" template]
+    ["[0]" code]]
+   [math
+    [number
+     ["n" nat]
+     ["i" int]
+     ["r" rev]
+     ["f" frac]]]
+   [type
+    abstract]
+   [world
+    [net {"+" URL}]]]]
+ [//
+  [selector {"+" Label}]])
+
+(syntax: (text_symbol [symbol <code>.text])
   (in (list (code.local_symbol (text.replaced "-" "_" symbol)))))
 
 (template: (enumeration: <abstraction> <representation> <out> <sample>+ <definition>+)
-  (abstract: .public <abstraction>
-    <representation>
+  [(abstract: .public <abstraction>
+     <representation>
 
-    (def: .public <out>
-      (-> <abstraction> <representation>)
-      (|>> :representation))
+     (def: .public <out>
+       (-> <abstraction> <representation>)
+       (|>> :representation))
 
-    (`` (template [<name> <value>]
-          [(def: .public <name> <abstraction> (:abstraction <value>))]
+     (`` (template [<name> <value>]
+           [(def: .public <name> <abstraction> (:abstraction <value>))]
 
-          (~~ (template.spliced <sample>+))
-          ))
+           (~~ (template.spliced <sample>+))
+           ))
 
-    (template.spliced <definition>+)))
+     (template.spliced <definition>+))])
 
 (template: (multi: <multi> <type> <separator>)
-  (def: .public (<multi> pre post)
-    (-> (Value <type>) (Value <type>) (Value <type>))
-    (:abstraction (format (:representation pre)
-                          <separator>
-                          (:representation post)))))
+  [(def: .public (<multi> pre post)
+     (-> (Value <type>) (Value <type>) (Value <type>))
+     (:abstraction (format (:representation pre)
+                           <separator>
+                           (:representation post))))])
 
 (def: (%number value)
   (Format Frac)
@@ -75,7 +76,21 @@
     [inherit "inherit"]
     [unset "unset"]
     )
-  
+
+  (abstract: .public (Numeric kind) Any)
+
+  (template [<name>]
+    [(with_expansions [<name>' (template.symbol [<name> "'"])]
+       (abstract: .public <name>' Any)
+       (type: .public <name>
+         (Numeric <name>')))]
+
+    [Number]
+    [Length]
+    [Time]
+    [Percentage]
+    )
+
   (template [<brand> <alias>+ <value>+]
     [(abstract: .public <brand> Any)
 
@@ -98,18 +113,6 @@
      []
      []]
 
-    [Number
-     []
-     []]
-
-    [Length
-     []
-     []]
-
-    [Time
-     []
-     []]
-
     [Thickness
      []
      [["medium"]
@@ -969,49 +972,41 @@
       )
     )
 
-  (abstract: .public Percentage
-    Text
+  (def: percentage_limit Nat (.++ 100))
 
-    (def: .public percentage
-      (-> Percentage Text)
-      (|>> :representation))
+  (def: .public (%% value)
+    (-> Nat (Value Percentage))
+    (:abstraction (format (%.nat (n.% percentage_limit value)) "%")))
 
-    (def: percentage_limit Nat (.++ 100))
-
-    (def: .public (%% value)
-      (-> Nat Percentage)
-      (:abstraction (format (%.nat (n.% percentage_limit value)) "%")))
-
-    (def: .public slice_percent/1
-      (-> Percentage (Value Slice))
-      (|>> :representation (:abstraction Value)))
-
-    (def: .public (slice_percent/2 horizontal vertical)
-      (-> Percentage Percentage (Value Slice))
-      (:abstraction Value (format (:representation horizontal) ..slice_separator
-                                  (:representation vertical))))
-
-    (template [<input> <pre> <function>+]
-      [(`` (template [<name> <function>]
-             [(def: .public <name>
-                (-> <input> (Value Filter))
-                (|>> <pre> (list) (..apply <function>)))]
-
-             (~~ (template.spliced <function>+))))]
-
-      [Nat (<| (:representation Value) ..px n.frac)
-       [[blur "blur"]]]
-      [Nat (<| ..angle ..degree)
-       [[hue_rotate "hue-rotate"]]]
-      [Percentage (:representation Percentage)
-       [[brightness "brightness"]
-        [contrast "contrast"]
-        [grayscale "grayscale"]
-        [invert "invert"]
-        [opacity "opacity"]
-        [saturate "saturate"]
-        [sepia "sepia"]]]
-      )
+  (def: .public slice_percent/1
+    (-> (Value Percentage) (Value Slice))
+    (|>> :transmutation))
+
+  (def: .public (slice_percent/2 horizontal vertical)
+    (-> (Value Percentage) (Value Percentage) (Value Slice))
+    (:abstraction (format (:representation horizontal) ..slice_separator
+                          (:representation vertical))))
+
+  (template [<input> <pre> <function>+]
+    [(`` (template [<name> <function>]
+           [(def: .public <name>
+              (-> <input> (Value Filter))
+              (|>> <pre> (list) (..apply <function>)))]
+
+           (~~ (template.spliced <function>+))))]
+
+    [Nat (<| :representation ..px n.frac)
+     [[blur "blur"]]]
+    [Nat (<| ..angle ..degree)
+     [[hue_rotate "hue-rotate"]]]
+    [(Value Percentage) :representation
+     [[brightness "brightness"]
+      [contrast "contrast"]
+      [grayscale "grayscale"]
+      [invert "invert"]
+      [opacity "opacity"]
+      [saturate "saturate"]
+      [sepia "sepia"]]]
     )
 
   (def: .public svg_filter
@@ -1329,4 +1324,22 @@
   (multi: multi_image Image ",")
   (multi: multi_shadow Shadow ",")
   (multi: multi_content Content " ")
+
+  ... https://developer.mozilla.org/en-US/docs/Web/CSS/calc()
+  (template [<name> <parameter>]
+    [(def: .public (<name> parameter subject)
+       (.All (_ kind)
+         (-> (Value <parameter>) (Value (Numeric kind))
+             (Value (Numeric kind))))
+       (|> (format (:representation subject)
+                   (template.text [" " <name> " "])
+                   (:representation parameter))
+           (text.enclosed ["calc(" ")"])
+           :abstraction))]
+
+    [+ (Numeric kind)]
+    [- (Numeric kind)]
+    [* Number]
+    [/ Number]
+    )
   )
diff --git a/stdlib/source/library/lux/macro/syntax/export.lux b/stdlib/source/library/lux/macro/syntax/export.lux
index aa482c559..7a87e30fd 100644
--- a/stdlib/source/library/lux/macro/syntax/export.lux
+++ b/stdlib/source/library/lux/macro/syntax/export.lux
@@ -14,8 +14,8 @@
 (def: policy
   (Parser Code)
   (do [! <>.monad]
-    [candiate <code>.next]
-    (case candiate
+    [candidate <code>.next]
+    (case candidate
       [_ {.#Symbol ["" _]}]
       (in default_policy)
       
@@ -23,7 +23,7 @@
            [_ {.#Symbol _}])
       (do !
         [_ <code>.any]
-        (in candiate))
+        (in candidate))
       
       _
       (in default_policy))))
diff --git a/stdlib/source/library/lux/tool/compiler/language/lux/phase/extension/directive/lux.lux b/stdlib/source/library/lux/tool/compiler/language/lux/phase/extension/directive/lux.lux
index 602aedfd0..a0ed6f3e6 100644
--- a/stdlib/source/library/lux/tool/compiler/language/lux/phase/extension/directive/lux.lux
+++ b/stdlib/source/library/lux/tool/compiler/language/lux/phase/extension/directive/lux.lux
@@ -193,6 +193,7 @@
   [directive directive' /////generation.learn_directive]
   )
 
+... TODO: Get rid of this function ASAP.
 (def: (refresh expander host_analysis)
   (All (_ anchor expression directive)
     (-> Expander /////analysis.Bundle (Operation anchor expression directive Any)))
@@ -201,12 +202,14 @@
      .let [eval (/////analysis/evaluation.evaluator expander
                                                     (value@ [/////directive.#synthesis /////directive.#state] state)
                                                     (value@ [/////directive.#generation /////directive.#state] state)
-                                                    (value@ [/////directive.#generation /////directive.#phase] state))]]
+                                                    (value@ [/////directive.#generation /////directive.#phase] state))
+           previous_analysis_extensions (value@ [/////directive.#analysis /////directive.#state ///.#bundle] state)]]
     (phase.set_state [bundle
                       (revised@ [/////directive.#analysis /////directive.#state]
                                 (: (-> /////analysis.State+ /////analysis.State+)
                                    (|>> product.right
-                                        [(///analysis.bundle eval host_analysis)]))
+                                        [(|> previous_analysis_extensions
+                                             (dictionary.merged (///analysis.bundle eval host_analysis)))]))
                                 state)])))
 
 (def: (announce_definition! short type)
diff --git a/stdlib/source/library/lux/tool/compiler/language/lux/version.lux b/stdlib/source/library/lux/tool/compiler/language/lux/version.lux
index 733188447..714ceb58a 100644
--- a/stdlib/source/library/lux/tool/compiler/language/lux/version.lux
+++ b/stdlib/source/library/lux/tool/compiler/language/lux/version.lux
@@ -6,4 +6,4 @@
 
 (def: .public version
   Version
-  00,06,02)
+  00,06,03)
diff --git a/stdlib/source/library/lux/world/file.lux b/stdlib/source/library/lux/world/file.lux
index 7c19c1963..de56b54a2 100644
--- a/stdlib/source/library/lux/world/file.lux
+++ b/stdlib/source/library/lux/world/file.lux
@@ -380,13 +380,13 @@
                  [process_load [global process mainModule constructor _load]]
                  )
 
-               (def: (require _)
-                 (-> [] (-> ffi.String Any))
+               (def: (require module)
+                 (-> ffi.String Any)
                  (case [(normal_require []) (global_require []) (process_load [])]
                    (^or [{.#Some require} _ _]
                         [_ {.#Some require} _]
                         [_ _ {.#Some require}])
-                   require
+                   (require module)
 
                    _
                    (undefined)))
@@ -394,7 +394,7 @@
                (template [<name> <module> <type>]
                  [(def: (<name> _)
                     (-> [] <type>)
-                    (:as <type> (..require [] <module>)))]
+                    (:as <type> (..require <module>)))]
 
                  [node_fs   "fs"   ..Fs]
                  [node_path "path" ..JsPath]