I don't see a mention of RIP graphics there.. My guess would be Mystic doesn't support RIP, but I don't know for sure.
I am just basing trying to do it on that Mystic would pass on the rip file to a terminal program capable of displaying it. I thought someone had mentioned they have seen it done with Mystic. However, maybe I understood their statements incorrectly.
Insomnia City BBS SysOp
Kalamazoo, MI USA
bbs.farcasternet.org Telnet 23, SSH 2222
... Back up my hard drive? I can't find the reverse switch!
--- Mystic BBS v1.12 A47 2021/12/24 (Linux/64)
* Origin: Insomnia City BBS - Kalamazoo, MI (21:1/156)