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## 11. Supported Screen Drivers

BRLTTY supports the following screen drivers:

as

  AT-SPI

hd

  This driver provides direct access to the Hurd console screen. It's only selectable, and is the default, on Hurd systems.

lx

  This driver provides direct access to the Linux console screen. It's only selectable, and is the default, on Linux systems.

sc

  This driver provides access to the `screen` program. It's selectable on all systems, and is the default if no native screen driver is available. The patch for `screen` which we provide (see the `Patches` subdirectory) must be applied. Use of this driver, due to the fact that `screen` must be concurrently running, makes BRLTTY effectively useful only after the user has logged in.

wn

  This driver provides direct access to the Windows console screen. It's only selectable, and is the default, on Windows/Cygwin systems.

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