I am using anope with PTlink.
The PTLink does not have halfop, more in botserv the command !halfop is qualified for ptlink.
It sees log below:
[16:25:19] <@R0berto> !halfop
[16:25:19] * Brasil define modo: +R
[16:25:31] <@R0berto> !dehalfop
[16:25:31] * Brasil define modo: -Rrt