Application manager in Sibo/Psion Siena
SIBO presents currently running applications in bold typeface. Files belonging to a given application are listed below (if a file is currently opened in an application, it is promoted to first row and presented in bold). Psion Siena handhelds also had a row of physical buttons that allowed to quickly switch between this screen and seven major applications (Data, Word, Agenda, Time, World, Calc and Sheet).
This GUI doesn’t have this feature.