32V/usr/man/man0/tocx4

cat(4) cat: phototypesetter interface.
dc(4) dc: DC-11 communications interface.
dh(4) dh: DH-11 communications multiplexer.
dn(4) dn: DN-11 ACU interface.
dp(4) dp: DP-11 201 data-phone interface.
dz(4) dz: DZ-11 communications multiplexer.
hp(4) hp: RH-11/RP04, RP05, RP06, RM03 moving-head disk.
hs(4) hs: RH11/RS03-RS04 fixed-head disk file.
ht(4) ht: RH-11/TE-16 magtape interface.
kl(4) kl: KL-11 or DL-11 asynchronous interface.
lp(4) lp: line printer.
mem(4) mem, kmem: main memory.
null(4) null: data sink.
pc(4) pc: PC-11 paper tape reader/punch.
rf(4) rf: RF11/RS11 fixed-head disk file.
rk(4) rk: RK-11/RK03 or RK05 disk.
rp(4) rp: RP-11/RP03 moving-head disk.
tc(4) tc: TC-11/TU56 DECtape.
tm(4) tm: TM-11/TU-10 magtape interface.
tty(4) tty: general terminal interface.
vp(4) vp: Versatec printer-plotter.