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usr/share/applications/portprotonqt_return.desktop

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+[Desktop Entry]
+Name=Return to PortProtonQt
+Exec=portproton-session-select gamescope
+Icon=steamdeck-gaming-return
+Terminal=false
+Type=Application
+StartupNotify=false
+Comment=Quickly exit the session to switch to PortProtonQt
+Comment[ru]=Быстрый выход из сессии для перехода в PortProtonQt
+Categories=Game;