The installer has two uppercase switches for the unattended installation and one command line parameter for the application closing:
/Sfor silent installation.
/D=C:\Program Files\My Installation Dirto set the installation path (no double quotes).
/kill=1forces the closure of the application before installing it (unsaved data are lost).
The uninstaller has one uppercase switch for the unattended uninstallation:
/Sfor silent uninstallation.