Core

    Core ERP5 model (node, path, movement, resource, amount, item)

Document

    Default documents based on the ERP5 Core

PropertySheet

    Definition of terms which are used all over ERP5

RDF

    ERP5 implementation of relations
    (should eventually be migrated to ZSQLCatalog)

UI

    User interface tools (ERP5 Formulator)

XML

    XML interface and synchronisation

OMB

    Object Message Bus technology

skins

    Default page templates and UI widgets

help

    Help documents

www

    Various files such as images which are used by products
