'debug' command is birdc

[Alexander Shikoff]

Hello,

Would someone be so kind to explain the syntax of 'debug' command in birdc?
The description in User's Guide is very short. I need to debug a filtering
to/from certain BGP neighbor. I've tried different options:

bird> debug ?
debug (<protocol> | <pattern> | all) (all | off | { states | routes | filters | interfaces | events | packets })  Control protocol debugging via BIRD logs
bird> debug FREEBIT filters
syntax error
bird> debug BGP filters
syntax error
bird> debug bgp filters
syntax error
bird> debug all filters
syntax error
bird> debug all states
syntax error

Thanks in advance!

-- 
MINO-RIPE