Exporting and importing apps can be very handy. If you want to reinstall Windows or move to a different computer, you can just export all installed programs to a cvs file and the import it on the other computer.

Installed Applications -> Check the apps you want to export and click Export->Selected or Export->All as shown in the screen shot below.
Save the export file on disk.

Browse Applications -> Select a filename for the exported list you want to import by clicking the Import button.
Make sure to check/uncheck the apps you want to install. By default the programs that's not installed are checked.
Then click on the Install button and have a coffee while QuickInstaller installs all the apps silently (if silent install is supported by the app installer).

That's it.