the cvs info manual says:
But in case you want to know, the rule is that the RCS file
is stored in the attic if and only if the head revision on
the trunk has state `dead'.
counterexamples:
/cvs/src/sbin/swapon/Attic/swapon.8,v
/cvs/src/distrib/vax/ramdisk/dot.commonutils,v
/cvs/src/sys/arch/mvme88k/stand/wrtvid/Makefile,v,v
/cvs/ports/net/rrdtool/patches/patch-config_ltmain_sh,v
/cvs/ports/x11/msttcorefonts/pkg/INSTALL,v
