move_backward     301 src/help.c         move_backward (1);
move_backward     763 src/help.c                 move_backward (1);
move_backward     872 src/help.c             move_backward (help_lines - 1);
move_backward     878 src/help.c             move_backward (help_lines / 2);
move_backward    1100 src/help.c             move_backward (help_lines - 1);
move_backward    1104 src/help.c             move_backward (1);