This page displays options for either a single host, hosts whose names match some pattern, or all hosts. Some of the less obvious options are :

Login as user
  Normally if no username is given on the `ssh` command line, the name of the current user is used to login to the remote SSH server. However, this option can be used to specify a different default username for a particular host or hosts.

Escape character
  When making an interactive SSH login, the escape character can be used to break out of the connection and close or suspend it.

Compress SSH traffic?
  If this option is enabled, the SSH client will compress all data sent to this host with the `gzip` algorithm. This can be useful if you are copying large files with `scp` over a slow link.

Local ports to forward to server
  In this table you can enter local port numbers which will be forwarded to some host and port by the SSH server. This can be useful if your only access to some network is via SSH login to one machine on that network, and you want to access other services like web or POP servers.

Server ports to forward to local
  In this table you can enter port numbers on the server which will be forwarded to some host and port on the client machine's network.