The progress package contains classes and interfaces allowing to gather
progress information during the enumeration process of elementary modes.
Currently, progress information is supported by
{@link ch.javasoft.metabolic.efm.tree.TreeMemAdjEnum TreeMemAdjEnum} and
subclasses, or more precisely by trees with
{@link ch.javasoft.metabolic.efm.tree.Node nodes} which support
{@link ch.javasoft.metabolic.efm.tree.TreeTraverser tree traversers}.
Current implementations typically write a file with progress information in the
algorithm temp directory.