Merge pull request #78 from razzeee/subsets

docs/01-for-users/02-installation.md

@@ -3,3 +3,27 @@
 Please refer to the Flatpak installation instructions for your distribution over at [flathub.org](https://flathub.org/setup/).
 
 These instructions will also show you how to install the Flathub repository.
+
+## Subsets
+
+In the case, that you only want a specific subset of apps, you can use the `--subset` option when adding the Flathub remote. You will only be able to install apps from the subset you specified.
+
+Only allow `verified` apps, if adding a new remote:
+
+```bash
+flatpak remote-add --if-not-exists --subset=verified flathub-verified https://flathub.org/repo/flathub.flatpakrepo
+```
+
+Or, if you already have the remote added, you can change the subset:
+
+```bash
+flatpak remote-modify --subset=verified flathub
+```
+
+The available subsets are:
+
+| Type           | Description                                                         |
+| -------------- | ------------------------------------------------------------------- |
+| verified       | Only allow verified apps                                            |
+| floss          | Only allow apps that are free and open source software              |
+| verified_floss | Only allow apps that are verified and free and open source software |