On this tab, all X Keysyms which correspond to the set of typed characters that you use in your X client applications are listed. By default, all Latin-1, Latin-2, Latin-3, Latin-4, Latin-8 and Latin-9 characters are supported. In most cases, if your keyboard can generate a character on the supported list, the correct X Keysym will automatically be sent to the X client; no additional mapping is required.
Supported (already included in the keymap)
The supported characters are listed on the left. Characters on the left are implicitly mapped, and will be handled appropriately if your keyboard has keys to produce them, or if you can use a sequence of keys to compose them.
Unsupported (available for mapping)
If you have a keyboard that includes characters that are not listed on the left (for example, Greek, Cyrillic, or Thai), use the << button to add them to the list of supported characters. No further (explicit) mapping is required.
When you press a key (or key sequence that generates a character)in the Find key dialog box, the results indicate if it is in the current keymap. Click Go to definition to see its location on the Characters tab.