When a new project is created, its task tree has the following groups: Catalogs, Journals, Details and Reports.
Catalogs and Journals belong to the Item Group type and have the same functional purpose. See Groups.
We created them to distinguish between two types of data items:
data items that contain information of catalog type such as customers, organizations, tracks, etc. - Catalogs
data items that store information about events recorded in some documents, such as invoices, purchase orders, etc. - Journals