Help for SyncBraille

lu/ld: go up/down one line
ru/rd: go left/right one window
RU+RD: go to cursor or undo last cursor tracking motion

lu+ld: go to beginning of current line
lu+ld + ru/rd: go to beginning of top/bottom line

lu+ru: toggle cursor tracking on/off
lu+rd: toggle 6/8-dot braille
ld+ru: freeze/unfreeze screen image
ld+rd: toggle attributes/text display

lu+ru+rd: switch to/from status line
ld+ru+rd: switch to/from preferences menu
lu+ld+ru+rd: switch to/from help page