Provides methods for using differential equations as modelling objects as described in J. Ramsay G. and Hooker (2017,ISBN 978-1-4939-7188-6) Dynamic Data Analysis, New York: Springer. Data sets and script files for analyzing many of the examples in this book are included. This version corrects bugs and adds two new demos, CruiseControl and monotoneSmoothDemo. This version incorporates a new system for indexing coefficient list objects. The step of setting up a set of coefficient list objects has been eliminated and the functions make.Coef() and coefCheck have been dropped. 'Matlab' versions of the code and sample analyses are available by ftp from the website. There you find a set of .zip files containing the functions and sample analyses, as well as two .txt files giving instructions for installation and some additional information.