Can't get ocl working as hashcat

[mercury]

there should be two subforums for hashcat and oclhashcat, since they have differences.
it's hard to read the forum if you need info for example oclhashcat related only.

for example, is it possible to specify the rule file "-r rules\leetspeak.rule" in oclhashcat, instead of just one rule in command line? (as suggests all examples)