cisco 1811

I tried look in Cisco website and searched there but I guess I did not have the right terms

1 where can I find the command list for configure with console connection via telnet? what is the comment or remark cmd/prefix? I am trying to make some scripts and doc in line with comments

1. which version of sdm should I use to connect to the 1881's LAN port to configure it 2.31, 2.21, 12.?

3 what about that java program?

thank you