I am connected via SSH to a remote Linux server and start a telnet session there.
In order to get to the telnet menu I need to send a ^] character.
I am also on a German keyboard, i.e. I need to press AltGr+9 to get the
] character. Pressing it together with the Ctrl key does noting (I googled and found that AltGr simulates Alt+Ctrl so it's not much of a surprise).
I can switch to U.S. keyboard and it works, but how do I send it from a native keyboard (preferably from ZOC, I'm only including Putty because more people seem to know it)?