WINDOW LOG %|on|off|toggle [<filename>]
WINDOW LOGFILE %|<file>
WINDOW NEW %|[HIDDEN|SPLIT]
WINDOW CLOSE %|[<first> [<last>]]
WINDOW REFNUM %|<number>
WINDOW GOTO %|active|<number>|<name>
WINDOW NEXT%|
WINDOW LAST%|
WINDOW PREVIOUS%|
WINDOW LEVEL %|[<level>]
WINDOW IMMORTAL %|on|off|toggle
WINDOW SERVER %|[-sticky | -unsticky] <tag>
WINDOW ITEM PREV%|
WINDOW ITEM NEXT%|
WINDOW ITEM GOTO %|<number>|<name>
WINDOW ITEM MOVE %|<number>|<name>
WINDOW NUMBER %|[-sticky] <number>
WINDOW NAME %|<name>
WINDOW HISTORY %|<name>
WINDOW MOVE PREV%|
WINDOW MOVE NEXT%|
WINDOW MOVE FIRST%|
WINDOW MOVE LAST%|
WINDOW MOVE %|<number>|<direction>
WINDOW LIST%|
WINDOW THEME %|[-delete] [<name>]
WINDOW GROW %|[<lines>]
WINDOW SHRINK %|[<lines>]
WINDOW SIZE %|<lines>
WINDOW BALANCE%|
WINDOW HIDE %|[<number>|<name>]
WINDOW SHOW %|<number>|<name>
WINDOW UP%|
WINDOW DOWN%|
WINDOW LEFT%|
WINDOW RIGHT%|
WINDOW STICK %|[<ref#>] [ON|OFF]
WINDOW MOVE LEFT%|
WINDOW MOVE RIGHT%|
WINDOW MOVE UP%|
WINDOW MOVE DOWN

This command includes various subcommands for handling irssi windows.

/WINDOW CLOSE
   - Closes the current window.
/WINDOW MOVE #NUMBER|LEFT|RIGHT
   - Moves current window to another position in the
     window list.
/WINDOW GOTO #NUMBER
   - Moves into the specified window.
/WINDOW GOTO ACTIVE 
   - finds the first window with the higest
     activity (msgs to you -> msgs -> rest). Alt-A is 
     the default shortcut key for this
/WINDOW GOTO #CHANNEL|NICK|=NICK 
   - moves you to the window with the channel, query or 
     dcc chat.
/WINDOW LEVEL [+/-]PUB/MSGS/...
   - /window level msgs      - creates messages window
   - /window level all -msgs - creates status window
/WINDOW NEW [HIDDEN|SPLIT] 
   - creates new hidden/splitted window, 
/WINDOW ITEM MOVE <number>|<name>
   - with a numeric argument, moves the active window
     item of the active window to the window with
     refnum <number>.
     with a string argument, moves the window item with
     name <name> to the active window.

Window logging
        
/WINDOW LOG ON|OFF|TOGGLE [<filename>]
   - Start/stop logging the active window. This works exactly like
     /LOG OPEN -window.
/WINDOW LOGFILE <filename> 
   - Sets the default log file to use in the window, it can be
     overridden by specifying the file name in /WINDOW LOG. 
     If no file name is given, Irssi defaults to 
     ~/irc.log.<windowname> or ~/irc.log.Window<ref#> if window 
     doesn't have a name.

See also: SET CREATE, JOIN, QUERY, LOG, LEVELS