Can someone explain the furnidata.txt format plz?

[Unidentified]

a

 

[Brop]

What do you mean?

 

[Unidentified]

i dont understand what goes where

 

[Blaze]

at the bottom in furnidata at the very bottom it goes under the last line of that code for example
["s","id","Name_id","example","0","1","1","","example","Coded by whoever","","-1","-1"],
Lastline of that but its not this. thats just an example.