khelpcenter5 from KDE:Applications:18.04 project
Seleziona il sistema operativo
Aggiungi il repository e installa manualmente
Per openSUSE Leap 15.0 eseguire quanto segue come root:
zypper addrepo https://download.opensuse.org/repositories/KDE:Applications:18.04/openSUSE_Leap_15.0/KDE:Applications:18.04.repo zypper refresh zypper install khelpcenter5