The six lines are the strings of the guitar. The higher the altitude of the line, the smaller the string number.
The figures on each line are the fret numbers.
All the scores are PDF Files. These MIDIs are merely the sequences of musical notes simply according to the scores.
"with TAB" means that the score has TAB. "with fingering" means that the score designates its fingering.
All the tunes of Toho Project of which scores are available in this site now were composed by ZUN (Team Shanghai Alice).