graphic: 0.673
files: 0.670
device: 0.645
performance: 0.614
vnc: 0.516
network: 0.499
PID: 0.489
semantic: 0.483
other: 0.464
debug: 0.453
socket: 0.448
boot: 0.320
KVM: 0.309
permissions: 0.221

man page is missing suboptions for "-display"