You can control SumatraPDF with DDE commands.
They are mostly used to use SumatraPDF as a preview tool from e.g. LaTeX editors that generate PDF files.

Format of DDE comands

Single DDE command: [Command(parameter1, parameter2, ..., )]
Multiple DDE commands: [Command1(parameter1, parameter2, ..., )][Command2(...)][...]

List of DDE commands:

Named commands

Since 3.5 you can send all named commands.

Open file

Jump to named destination command

Go to page

Set view settings