I would like to start a portable app with additional start parameters.
They could be added by a .bat or .lnk file. But these files are not listet as startable programms inside the PorttableApps launcher.
Is it possible to get this changed?
If you only want to pass parameters that will always be the same, have a look at the Readme.txt file in the \Other\Source directory of any official app.
Otherwise, the launcher.ini does handle .bat files, I have a portable version of Wiki on a Stick that I put together myself which uses a .bat file to open the file in the system default browser.