1 catlog
2? 
2  -?
2  -h
2  -help
3?  -entries
3.1 25
3.1 50
3.1 75
3.1 100
4?  -log
4.1! cluster
4.1 admin
4.1 audit
4.1 event
4.1 security
5?  -date YYYY–MM–DD
6?  -order
6.1 newest
6.1 oldest
7  -level
8+ ,
8 info
8 err
8 warn
8 sev