irssi/docs/help/in/dcc.in

@SYNTAX:dcc@

This is a command to handle different DCC-connections. DCC is mainly
used for more reliable and faster chatting and for sending and receiving 
files.

/DCC LIST
    - Shows all the open DCC connections.
/DCC RESUME <nick> [<file>]
    - Resumes a DCC SEND/GET connection.
/DCC CHAT <nick>
    - Sends a chat connection request to remote client or accepts 
      a chat connection if the remote end has already sent a request.
/DCC GET <nick> [<file>]
    - Gets the file offered by remote client. The file is downloaded and
      saved into the current working directory.
/DCC SEND <nick> <file>
    - Sends a DCC SEND request to remote client. Remote end has to accept
      the request before the transmission can be started.
/DCC CLOSE <type> <nick> [<file>]
    - Closes a DCC-connection. Type can be either SEND, GET or CHAT.

See also: CD