There are four different Hungarian keymaps, depending on the infamous y-z key swap and the number of keys on the keyboard (101 or 102). For 101-key keyboards there is no separate 0 (zero) key, it is accessible by Alt-i'. The Happy Hacking Keyboard has a layout similar to 101 keys, so this must be used there as well. Important punctuation characters are accessible with mappings using the Alt key, so we have to disable menu-shortcuts using the Alt key with the following setting. :set winaltkeys=no If this setting is enabled, we can define the missing keys. Here are the most important ones: