mount --bind entry in fstab

I wish to let this survive a reboot: mount --bind /usr/local/ftp/pub/incoming /usr/local/httpd/htdocs/incoming This binds the contents of the http incoming directory to the ftp incoming directory so that http mirrors what came in through ftp at any time. I wish to insert an entry in /etc/fstab to let it survive a reboot, but I haven't found anything in 'man fstab' about this. How is it done? Best regards, David List