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-rw-r--r--doc/manual/procs.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/manual/procs.txt b/doc/manual/procs.txt
index 44aeb089a..10dd39a52 100644
--- a/doc/manual/procs.txt
+++ b/doc/manual/procs.txt
@@ -571,6 +571,7 @@ Closure iterators have other restrictions than inline iterators:
 3. ``return`` is allowed in a closure iterator (but rarely useful) and ends
    iteration.
 4. Neither inline nor closure iterators can be recursive.
+5. Closure iterators are not supported by the js backend.
 
 Iterators that are neither marked ``{.closure.}`` nor ``{.inline.}`` explicitly
 default to being inline, but this may change in future versions of the