BRLTTY Help Screen (Vario)

Movement keys:
    B1  Up one line
S   B1  Top left corner of screen
    B2  Go left one window
    B4  Down one line
S   B4  Bottom left corner of screen
    B5  Go right one window
    B6  Go back to cursor

Other functions:
B3      Shift
S   B2  Toggle skipping of identical lines
S   B5  Toggle cursor tracking
S   B6  Enter preferences menu
