HelenOS sources

BANNER_RIGHT       45 kernel/generic/src/debug/panic.c #define BANNER_RIGHT  "<######"
BANNER_RIGHT       54 uspace/app/init/init.c #define BANNER_RIGHT  " <######"
BANNER_RIGHT       60 uspace/srv/system/system.c #define BANNER_RIGHT  " <######"
HelenOS homepage, sources at GitHub