 First of all, let's go to add widgets, get new widgets and download new widgets. Then we should search for configuration saver, which is the applet that we'll use today. Install it, I already have it installed, and then go back to add widgets, and this time search directly for config saver. You can now drag it to your panel. Since I've implemented margin areas, you can also edit the panel and drag the config saver into the margin area so the icon is more consistent. Then we can remove the old settings that I had and save a new one, default let's call it, and then remove the old one. So now we can start messing up with our system. Let's change the wallpaper from these pictures to a static image or actually rather a plain color. I'll go with blue. It's fine. Then we can also add a new panel as an example. And finally also add a widget to the desktop, such as the analog clock. Then we can go into the config saver and save our new config under the name of, I don't know, two blue panels and then save. If you don't like this, we can get back to the default one by clicking this. PlasmaShall will restart and as soon as it boots up, we can see that we are again using the pictures and one panel. If we click again on two blue panels, again, PlasmaShall will restart and we have two panels, the blue wallpaper and the clock. Let's try to mess up more with this. Let's go to appearance and change as an example the Plasma style to the one that I'm developing, Sonia. And also why not the colors to, I don't know, Breeze icon trust. We can also change the window decorations. I'm a bit undecided on which one to use, but I'll go with plastic, beautiful. And even why not the icons. Now as we can see, this setup is completely broken. So we can close system settings, we've done enough and save this config as broken. Now if we want, we can get back to the default one. So everything is no longer broken. And we can see that as soon as PlasmaShall restarts, everything works again. We have the default Breeze panel and default color scheme. If we want to get back to the broken system for any reason, I don't know if there's a good one, but still. We can see that everything is indeed still broken using the Adwaita icons and everything. We can also get to the middle ground, which is the two blue panels and give it a couple of seconds. We can see the two Breeze panels. We can also decide to export, maybe as a joke, the broken setup, maybe to send it to someone else. And if we want to import it from someone that sent it to us, we can click on the import button and select the config.