2015년 2월 3일 오후 7:19
| purpose | find which input title precedes a specified one |
|---|---|
| input | a selection of titles |
| parameter | T=one of those titles |
| output | the title that immediately precedes T in the input |
Learn more about how to use Filters
If T is not present in the input, or is the first title there, then the output is empty.