In the opus numbers section, the DaSCH Service Platform (DSP) provides a list of Webern's complete works arranged according to their opus number. Anton Webern himself only allocated opus numbers to certain of his compositions. For each opus number there is an entry with brief information about the origins of the work, its first performance and/or publication, as well as an outline of its various sources. References to a broader scheme within the context of the composer's other works and the differing versions of a given work etc., are indicated via links (this area is still being developed and is regularly extended and supplemented).