move_backward     290 src/help.c         move_backward (1);
move_backward     699 src/help.c                 move_backward (1);
move_backward     808 src/help.c             move_backward (help_lines - 1);
move_backward     814 src/help.c             move_backward (help_lines / 2);
move_backward    1010 src/help.c             move_backward (help_lines - 1);
move_backward    1014 src/help.c             move_backward (1);