Ssh authorized keysfile

here we got two options in out ssh authorized_key file:

1) from="192.168.17.137" 2) command="cat /var/log/acct.log"

i don't know where to find this in the man page, but if you know some more options, we can put in the authorized_key file, drop them down in this page here, please :)

from="192.168.17.137" command="cat /var/log/acct.log" ssh-dss wBFTUwRAZxw/KQphu z3GcMAAAEAQffWXAtd8qFO4KmnuADvElvQ3RDg/399LFdTRkMAZI8Dsr4zoyYNPjg2tpjW6FaDD[...] KEY [...] viPp/prucv4ZWwoyYltEQR+y0jHJcQ7/rnyyyzcnUiJ14kWaF2IwEenDvkwcRgDGz5CoyO+LkO+Qi7R2 IsJgTvAjBqZL5jlHYoY98Av3MxVHzVyRz44/ULG7j/TQEi26mlnba8H2GPI0REmDLPWPl0fJJWZKSHc3 DfxslWgJwLzB4nI961SF9lD7kSIZM4AI8is++iqRkJnPK5kawEX5i4kywwL3V35Fhu5sXBzgPPlZDRc3 0zAcRCK6bVo7EHFyzvaOFzEwvKqwjkYA== plong@pling.org