Command line keys and parameters for MTG Studio (mtgstudio.exe and mtgstudio_portable.exe):

[deck filename] - Open deck by providing its [deck filename] as first parameter.

/ns - Start the program without splash screen

/portable - Start the program as portable application. MTG Studio will create all its configuration files under the startup folder.

Command line keys and parameters for Auto Updater (kicker.exe):

/auth basic - Specify that basic authentication will be used during the download of a newer version.

/u [username] - Provide the [username] to be used in basic authentication.

/p [password] - Provide the [password] to be used in basic authentication.

Note that instead of "/" character for parameters the "-" character can also be used. (i.e. "-ns" is equivalent to "/ns")