num_0

[filix_93]

depens of what items you are speaking , for example for armors a_num_0 = physical defense , a_num_1 = magic defense

for weapon a_num_0 = physical attack , a_num_1 = magic attack , a_num_2 = attack speed

for title a_num_0 is the id of the title in titletool.lod etc. etc. etc.