Find Key

Press a key.

Click in the Press a key field, then press the key you want to investigate. You may also press a combination of keys that produce (compose) a character. If the key you pressed generates a character, the Results section displays the character that the key is producing, its X Keysym An X Keysym is an encoding of a symbol on the cap of a key. The set of defined X Keysyms includes the ISO Latin character sets, Katakana, Arabic, Cyrillic, Greek, Technical, Publishing, APL, Hebrew, Thai, Korean, and other keys found on keyboards such as Return, Help, and Tab. A list of X Keysyms is associated with each keycode. The list is intended to convey the set of symbols on the corresponding key. Standard rules for obtaining an X Keysym from a KeyPress event make use of only the first four X Keysyms associated with a keycode. Depending on the state of the Shift and ModeSwitch (AltGr) modifiers, one of the first four keysyms will be selected. name if available, and whether it is already in the keyboard map's list of supported characters. The Results section also indicates if the key (or combination of keys) is explicitly mapped, has been defined as a keyboard shortcut, or is undefined.

Select key name.

Locate the key by selecting it from the Select key name list to see the character this key is producing.

Confirm the Key location; if the key is located on the Numeric keypad or with left and right instances, use this option to identify it.

You press or select a key that is in the list of supported characters. You'll see the character set as it is commonly displayed, the corresponding Unicode value, and the name of the corresponding X Keysym if one exists.

If the character is supported and is producing the result you expect, no additional mapping is required.

Click Go to definition to see its membership in the list of supported characters on the Characters tab.

You press, compose, or select a key that is not in the list of supported characters (such as pi, π).

You'll see results that indicate the character is not in the list of supported characters. Click Create definition to add a new line to the list of Explicitly mapped keys with a NoSymbol Keysym. To change the mapping, click Change Mapped X Keysym in the right pane.

You press or select a key that is explicitly mapped (such as F12). You'll see the associated X Keysym.

If the character is producing the X Keysym you expect, no additional mapping is required.

Click Go to definition to see its location in the list of Explicitly mapped keys on the Map Key tab.

If necessary, you can change the mapping by clicking Change Mapped X Keysym on the right.

You select a key that is not defined (such as F23 on many keyboards) that has not by default been explicitly mapped to an X Keysym).

Click the Create definition button to add a new line to the list of Explicitly mapped keys with a NoSymbol Keysym. You can then change the mapping by clicking Change Mapped X Keysym on the right.