diff --git a/langfilter/Main.hs b/langfilter/Main.hs
index 51dfb8c..652c9cc 100644
--- a/langfilter/Main.hs
+++ b/langfilter/Main.hs
@@ -12,7 +12,7 @@ import qualified Data.Map as Map
 main :: IO ()
 main = toJSONFilter filter where
   filter p@(Pandoc (Meta m) _) = do
-    lang' <- toLang $ Map.lookup "lang" m
+    lang' <- toLang $ Map.lookup "conlang" m
     let ?lang = lang'
     fmap (walk makeEbnf .
           walk (concatMap makeFigures) .
diff --git a/pages/laantas/abbrevs.md b/pages/laantas/abbrevs.md
index 99be923..7ee8b1f 100644
--- a/pages/laantas/abbrevs.md
+++ b/pages/laantas/abbrevs.md
@@ -3,7 +3,7 @@ title: List of abbreviations
 hidetoc: true
 backname: Lántas
 backlink: ../laantas
-lang: lántas
+conlang: lántas
 ...
 
 :::threecol
diff --git a/pages/laantas/examples.md b/pages/laantas/examples.md
index 230a4f9..18e88ed 100644
--- a/pages/laantas/examples.md
+++ b/pages/laantas/examples.md
@@ -2,7 +2,7 @@
 title: Lántas examples
 backname: Lántas
 backlink: .
-lang: lántas
+conlang: lántas
 ...
 
 # The North Wind and the Sun
diff --git a/pages/laantas/index.md b/pages/laantas/index.md
index 7b4d673..9ecc265 100644
--- a/pages/laantas/index.md
+++ b/pages/laantas/index.md
@@ -1,7 +1,7 @@
 ---
 title: Lántas
 toc: false
-lang: lántas
+conlang: lántas
 ...
 
 :::splash
diff --git a/pages/laantas/nouns.md b/pages/laantas/nouns.md
index ac6be67..fe0f760 100644
--- a/pages/laantas/nouns.md
+++ b/pages/laantas/nouns.md
@@ -2,7 +2,7 @@
 title: Lántas nouns
 backname: Lántas
 backlink: .
-lang: lántas
+conlang: lántas
 ...
 
 Lántas is unusual (as far as I know) in that words which are often considered
diff --git a/pages/laantas/numbers.md b/pages/laantas/numbers.md
index afffd75..700706e 100644
--- a/pages/laantas/numbers.md
+++ b/pages/laantas/numbers.md
@@ -3,7 +3,7 @@ title: Lántas numbers
 hidetoc: true
 backname: Lántas
 backlink: .
-lang: lántas
+conlang: lántas
 ...
 
 ---- ------------------ ------ ------------------
diff --git a/pages/laantas/phono.md b/pages/laantas/phono.md
index 7a95256..aee06ed 100644
--- a/pages/laantas/phono.md
+++ b/pages/laantas/phono.md
@@ -2,7 +2,7 @@
 title: Lántas phonology
 backname: Lántas
 backlink: .
-lang: lántas
+conlang: lántas
 ...
 
 # Vowels
diff --git a/pages/laantas/prons.md b/pages/laantas/prons.md
index 4dcde40..36e6962 100644
--- a/pages/laantas/prons.md
+++ b/pages/laantas/prons.md
@@ -2,7 +2,7 @@
 title: Lántas pronouns, demonstratives, etc
 backname: Lántas
 backlink: .
-lang: lántas
+conlang: lántas
 ...
 
 Pronouns are inflected for the same cases as other nouns, though their forms
diff --git a/pages/laantas/verbs.md b/pages/laantas/verbs.md
index 18b4cee..3686ed5 100644
--- a/pages/laantas/verbs.md
+++ b/pages/laantas/verbs.md
@@ -2,7 +2,7 @@
 title: Lántas verbs
 backname: Lántas
 backlink: ../laantas
-lang: lántas
+conlang: lántas
 ...
 
 
diff --git a/pages/laantas/writing.md b/pages/laantas/writing.md
index dd08514..4c984cd 100644
--- a/pages/laantas/writing.md
+++ b/pages/laantas/writing.md
@@ -2,7 +2,7 @@
 title: Lántas writing
 backname: Lántas
 backlink: .
-lang: lántas
+conlang: lántas
 ...
 
 Lántas is written with a simple alphasyllabary, where most glyphs consist of