--- a/bash/doc/bashref.texi
+++ b/bash/doc/bashref.texi
@@ -2030,6 +2030,9 @@
 care, as they may conflict with file descriptors the shell uses
 internally.
 
+Note that the @code{exec} builtin command can make redirections take
+effect in the current shell.
+
 @subsection Redirecting Input
 Redirection of input causes the file whose name results from
 the expansion of @var{word}