Silent Installation - GIMP 3.0.6

Hi
Why does the silent installation parameter not work?
Why is it not documented?
Why must <``` [3]> be specified?

~dp0gimp-3.0.6-setup-1.exe" /ALLUSERS /SP- /VERYSILENT /NORESTART /LOG="~dp0Gimp.log” ``` [3]

“C:\Program Files\GIMP 3\uninst\unins000.exe” /VERYSILENT /SP- /NORESTART /LOG=“%~dp0Gimpde.log” ``` [3]

greetings
Toni