Add a function saving chat

they must add a function saving chat like afreeca korean stream
http://afbbs.afreeca.com:8080/app/read_ucc_bbs.cgi?szBjId=hamjangsa&nStationNo=2118558&nBbsNo=13561707&nTitleNo=7448382&nRowNum=15&szSkin=&nPageNo=1 (works on IE)

So you can download a chat transcript? You could always set up an IRC bot to idle and log the chat you want to keep.