This chapter is included here for completeness. It is of no interest to users who do not look after the technical details of their computer's configuration themselves, but is aimed at technical users and support personnel. Setting up the Braille input keyboard with a custom location rather than accepting the default dot positions is not straightforward and parts of this section are highly technical. We also explain under this heading how to create a more general keyboard mapping with more than one Braille input keyboard, the Braille keyboard and the QWERTY keyboard available at the same time, or a customised keyboard layout without Braille input.

To enable the Braille input keyboard, Use the "B" (uppercase) configuration substring option in the driver configuration string. If this option is present but is preceded by a minus sign ("-"), it is not processed; remove the minus sign to enable it. The "B" can optionally be followed by 8 characters or other key codes representing dots 12345678, respectively, otherwise the default location of "FDSJKLA;" is used.

If you enter a dot pattern to specify the position of the Braille keys, you must specify all 8 dots, or the keyboard will only configure for the specified dots and the remainder are undefined, may not be represented at all or have arbitrary positions. Characters representing dots must be in uppercase where there is a case distinction, such as alphabetic characters. If the Braille input keyboard configuration substring includes a semicolon, the semicolon must be specified by character embedding to avoid conflict with its use as substring separator. Similarly, if the Braille keyboard location includes a comma, it must be character embedded, since the setup configuration substring can include options separated from the layout definition by a comma.

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Braille Keyboard Setup