Openbox + Pcmanfm + gnome-menus -> No Applications

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https://bbs.archlinux.org – I'm sorry for not being clear.Pcmanfm has a bookmark in the sidepane between trash and drives which reads 'Applications'. When you click on it pcmanfm is supposed to show installed applications. They can be launched from there too.In the pcmanfm arch wiki it sais to install gnome-menus to achieve this. So I assume pcmanfm uses menu files to display and group applications.I don't have a Desktop environment, only openbox as window manager and use the openbox menu to launch apps. But also xfce4-application-launcher.I'd just like to enable pmanfm's feature to launch a (HowTos)