move_backward     290 src/help.c         move_backward (1);
move_backward     698 src/help.c                 move_backward (1);
move_backward     807 src/help.c             move_backward (help_lines - 1);
move_backward     813 src/help.c             move_backward (help_lines / 2);
move_backward    1035 src/help.c             move_backward (help_lines - 1);
move_backward    1039 src/help.c             move_backward (1);