To reset ARB to it's defaults simply remove one/all *.arb files from the directory '~/.arb_prop'
The files in ~/.arb_prop are textfiles. Advanced users may remove or change single sections or entries.
You can hand over your properties to another user by giving him your property-files.
Several windows provide a more fine-grained possibility to exchange settings with other users, using the Save/Load functions for configurations (see ´Property/settings configurations´).