diff --git a/scsh/next/signals.scm b/scsh/next/signals.scm
index d8b47c2..c8e3c79 100644
--- a/scsh/next/signals.scm
+++ b/scsh/next/signals.scm
@@ -65,3 +65,7 @@
   (usr1 30)	; user defined signal 1 
   (usr2 31)	; user defined signal 2 
   )
+
+(define signals-ignored-by-default
+  (list signal/chld signal/cont                         ; These are Posix.
+        signal/io signal/urg signal/winch))             ; These are NeXT.