Variables starting with `x' in mint

• x100 mint/unifs.c:694
• x21 mint/procfs.c:173
• x2d02ef8dL mint/tosfs.c:227
• x7fff mint/timeout.c:19
• _xbios_max mint/syscall.spp:71
• xbios_tab mint/xbios.c:27
• xk_def mint/file.h:601