+ strncasecmp(target, "prev", strlen("prev")) == 0 ||
+ strncasecmp(target, "next_on_output", strlen("next_on_output")) == 0 ||
+ strncasecmp(target, "prev_on_output", strlen("prev_on_output")) == 0 ||
+ strncasecmp(target, "back_and_forth", strlen("back_and_forth")) == 0)