# -mode:

This option alters the current mode, which is specified by a number from 0 to 9. The parameters for that mode are then read from the Windows Registry.
This option has the same effect as modifying the Option->Mode... settings from the toolbar, but is effective at the next Open or ReNew.
This parameter can be set at startup as a command-line parameter, or DDE communication. It can be used to start dviout with a mode different from the default which is set on the Property Sheets->[REGISTRY] page.