Good day what is "burnfrom function" in this contract means

Support
1

Hello , i stumbled into this CA https://testnet.bscscan.com/address/0xbafccdd36a8d3bb10ee68b0c63b24a8d3d81309a#code

i want to know what the "burnfrom" function in the write function is used for ?

is a hidden mint code ? or burn token from wallet?