move_backward     290 src/help.c         move_backward (1);
move_backward     752 src/help.c                 move_backward (1);
move_backward     861 src/help.c             move_backward (help_lines - 1);
move_backward     867 src/help.c             move_backward (help_lines / 2);
move_backward    1089 src/help.c             move_backward (help_lines - 1);
move_backward    1093 src/help.c             move_backward (1);