We review the observed properties of anomalous cosmic rays and the pre
sent status of our knowledge of the processes by which they originate.
We compiled a comprehensive set of ACR energy spectral data from vari
ous spacecraft throughout the heliosphere during the passes of Ulysses
over the poles of the Sun and present first results of a detailed mod
eling effort. In several contributions, we discuss the questions of in
jection and possible pre-acceleration of pickup ions, summarize new ob
servations on the ionic charge composition, and present new results on
the composition of minor ions in ACRs.