diff --git a/doc/frama-c-book.cls b/doc/frama-c-book.cls
index e8425770b1fa148bb7e797121a09876eaeab66a9..babfa353e3c311bb2d94ead3ff5783f5c675c583 100644
--- a/doc/frama-c-book.cls
+++ b/doc/frama-c-book.cls
@@ -502,14 +502,16 @@
 	classoffset=1,
 	morekeywords={admit,allocates,assert,assigns,assumes,axiom,axiomatic,behavior,
 	  behaviors,boolean,breaks,calls,check,complete,continues,data,decreases,disjoint,
-		ensures,exits,frees,ghost,global,inductive,integer,invariant,lemma,logic,loop,
-	  model,predicate,reads,real,requires,sizeof,strong,struct,terminates,
-	  %returns,
-	  type,union,variant
-	  Here,LoopCurrent,LoopEntry,Pre,Post,Old,
-		\\at,\\allocable,\\base_addr,\\block_length,\\exists,\\false,\\forall,
-    \\freeable,\\fresh,\\from,\\initialized,\\nothing,\\numof,\\object_pointer,
-    \\offset,\\old,\\result,\\separated,\\sum,\\true,\\valid,\\valid_read},
+    ensures,exits,frees,ghost,global,import,inductive,integer,invariant,lemma,
+    logic,loop,model,module,predicate,reads,real,requires,sizeof,strong,struct,
+    terminates,returns,type,union,variant,
+    Here,LoopCurrent,LoopEntry,Pre,Post,Old,
+    \\Cons,\\Down,\\NearestAway,\\NearestEven,\\Nil,\\ToZero,\\Up,
+    \\at,\\allocable,\\allocation,\\automatic,\\base_addr,\\block_length,\\dangling,
+    \\dynamic,\\exists,\\exit_status,\\false,\\forall,\\freeable,\\fresh,\\from,
+    \\in,\\initialized,\\lambda,\\let,\\list,\\match,\\nothing,\\null,\\numof,
+    \\object_pointer,\\offset,\\old,\\register,\\result,\\separated,\\static,
+    \\sum,\\true,\\unallocated,\\valid,\\valid_function,\\valid_read,\\with},
   classoffset=0,
 	alsoletter={\\},
 	morecomment=[l]{//}