pg_restore -d htsys mmc-catalogue.tar
This command will create a MULTIMEDIA CATALOGUE with several sections and entries. It will override any other objects (including the hyperroot and rootcollection) which may have been stored in the hypertext system before. If this is not what you want consider to create the catalogue manually (see section 4.5.1).
The author of each object in the example catalogue is the user 'mmc'. If you have not created this user by now, do it now to be able to modify the catalogue.