commit bash-20111021 snapshot

doc/bash.1

@@ -8490,8 +8490,11 @@ that script and return either
 .I n
 or the exit status of the last command executed within the
 script as the exit status of the script.
+If \fIn\fP is supplied, the return value is its least significant
+8 bits.
 The return status is non-zero if
 .B return
+is supplied a non-numeric argument, or
 is used outside a
 function and not during execution of a script by \fB.\fP\^ or \fBsource\fP.
 Any command associated with the \fBRETURN\fP trap is executed