arm: 0.787
mistranslation: 0.686
graphic: 0.673
files: 0.670
device: 0.645
architecture: 0.629
ppc: 0.623
performance: 0.614
VMM: 0.605
register: 0.572
vnc: 0.516
network: 0.499
PID: 0.489
semantic: 0.483
kernel: 0.457
debug: 0.453
TCG: 0.450
socket: 0.448
risc-v: 0.325
virtual: 0.322
boot: 0.320
KVM: 0.309
i386: 0.296
assembly: 0.270
permissions: 0.221
user-level: 0.206
peripherals: 0.175
x86: 0.166
hypervisor: 0.087

man page is missing suboptions for "-display"