Documentation - Command Line Arguments

-play: Start slide show automatically, in this mode closing full screen closes the viewer.

-dir [dir_name]: Load selected directory

-full: Start in Full Screen Preview mode

-pano: Start in Full Screen Panoramic mode.

-nav: Start in Full Screen Navigator mode.

-onlyfull: Will only permit full screen. Closing full screen will close the viewer.

-nosplash: Do not show initial splash screen on first run.

-ini [file_name]: Loads configuration from specified INI file (instead of user registry) and writes config back to the file in the end of execution.

Any other argument without "-" is added to file list as a file.