could someone help me with how the code content meta structer works?

[Norris]

so im trying to modify minecraft wii u edition then repack it into wup installable want to edit the textures and things not needed in speedruns for less lag/ faster loading times for better reset effecnify i kinda sorta understand how some of the structure works but some things i really dont get could someone help me out or link me to somewhere else i could research

 

[godreborn]

afaik, that would be in the content folder. code and meta are for specific purposes iirc.