I have 3 monitors.
my one AGP Nvidia card has 2 display adapters on it.
And the other card is a old school ATI PCI card.

When I enter full screen, it always moves to the center display, (display 1) and shows itself only on that monitor, even if i had prior dragged the windowed mode version to "monitor / screen / display / adapter" 2, or 3.

My monitors are in different rooms in my house. So i need to be able to enter full-screen mode on each of them at any particular time. Simply changing which monitor is the primary monitor all willy-nilly using "windows display settings" is not an option. So,

How do I control which "monitor / screen / display / adapter" Dosbox enters full screen mode on? Is there a command line switch? or a SET SLD option? or is there something i can put in my "x-com_ufo.conf / dosbox_074.conf / stargunner.conf" file?

Please show me which line to include. I've searched the forum and all i found were vague answers from people who were not sure.

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And on a side note, did anyone ever develop third party software to deal with the refresh rate screen tearing from dosbox'es "vsync / wait for vertical sync / vblank" oversight? screen tearing is a nasty problem when using scrolling shmup games.