diff --git a/scsh/aix/signals.scm b/scsh/aix/signals.scm
index c10a295..774e3b7 100644
--- a/scsh/aix/signals.scm
+++ b/scsh/aix/signals.scm
@@ -14,16 +14,16 @@
   (iot	5)	; IOT instruction 
   (abrt 6)	; used by abort, replace SIGIOT in the future 
   (fpe	8)	; floating point exception 
-  (igemt 7)	; EMT intruction
-  (igfpe 8)	; floating point exception
+  (emt 7)	; EMT intruction
+  (fpe 8)	; floating point exception
   (kill	9)	; kill (cannot be caught or ignored) 
   (bus 10)	; bus error (specification exception)
   (segv	11)	; segmentation violation
-  (igsys 12)	; bad argument to system call
+  (sys 12)	; bad argument to system call
   (pipe	13)	; write on a pipe with no one to read it 
   (alrm	14)	; alarm clock 
   (term	15)	; software termination signal from kill 
-  (igurg 16)	; urgent contition on I/O channel
+  (urg 16)	; urgent contition on I/O channel
   (stop	17)	; sendable stop signal not from tty 
   (tstp	18)	; stop signal from tty 
   (cont	19)	; continue a stopped process 
@@ -47,5 +47,7 @@
   (virt 37)	; AIX virtual time alarm
   )
 
-
-
+(define signals-ignored-by-default
+  (list signal/chld signal/cont		             ; These are Posix.
+	signal/urg signal/io signal/winch signal/pwr ; These are AIX
+	signal/danger))