[whirlewind@9A4172 whirlewind]$ opera -help
Usage: opera [options] url

  -newwindow                     open url in new window
  -newpage                       open url in new page (tab)
  -backgroundpage                open url in background page (tab)
  -fullscreen                    start in full screen mode
  -iconic                        start in iconic mode
  -geometry <geometry>           set geometry of toplevel window
  -remote <command>              send command to another Opera window
  -noraise                       no window raise when receiving remote commands
  -window <window id>            a remote opera window
  -windowname <window name>      a remote opera window with a symbolic name
  -restore                       restore default interface
  -nosession                     do not open saved window sessions or homepage
  -nowin                         do not open any document windows
  -nomail                        start opera without internal e-mail client
  -language <file>               use translation from specified file
  -binarydir <path>              location of version specific binaries
  -personaldir <path>            location of alternative '.opera' directory
  -display <displayname>         set the X display
  -fn <font>                     set the normal text font
  -bg <color>                    set the background color
  -fg <color>                    set the foreground color
  -visual TrueColor              use TrueColor visual on an 8-bit display
  -cmap                          use private color map on an 8-bit display
  -bigicon                       use a bigger icon image
  -debugdns                      simple debugging of asynchronous dns lookup
  -debugfont                     simple debugging of font handling
  -debugjava                     simple debugging of java
  -debugkeyboard                 simple debugging of keyboard events
  -debugplugin                   simple debugging of plugin handling
  -disableinputmethods           disable input methods
  -restoreextensions             restore default file type extensions
  -version                       show version number
  -kioskhelp                     extra settings for kiosk mode operation
  -help or -h                    show this help

Remote commands:
  openURL()                      open "Go to" dialog box prompting for input
  openURL(url)                   open url in active window
  openURL(url,new-window)        open url in new window
  openURL(url,new-page)          open url in new page (tab)
  openURL(url,background-page)   open url in background page (tab)
  openFile()                     open file selector dialog box
  openM2()                       open M2 list view
  openComposer()                 open M2 composer window
  addBookmark(url)               add url to bookmark list
  raise()                        raises the opera window
  lower()                        lowers the opera window

Notes:
  * The geometry is set using standard X format: WIDTHxHEIGHT+XOFF+YOFF
  * A 'url' argument takes precedence over the '-remote' command.
  * '-window' and '-windowname' have effect for both '-remote' and
    '-newwindow' commands
  * '-noraise' works for remote commands that do not open a dialog box
  * '-window' option accepts hexadecimal (default) or a decimal argument
  * '-fullscreen' has only effect when a new browser is launched
  * '-nowin' disables any url argument and remote command.
  * '-windowname' will override '-newwindow' if a named window is located