[!]assert=<filter> (an RFC 4515 Filter)
[!]authzid=<authzid> ("dn:<dn>" or "u:<user>")
[!]manageDSAit
[!]noop
ppolicy
[!]postread[=<attrs>] (a comma-separated attribute list)
[!]preread[=<attrs>] (a comma-separated attribute list)
abandon, cancel (SIGINT sends abandon/cancel; not really controls)