The program understanding task is usually time and effort consuming. In a traditional way the code is inspected line by line by
the user without any kind of help. But this becomes impossible for large
systems. Some software systems were created in order to generate automatically
explanations, metrics, statistics and visualizations to describe
the syntax and the semantic of programs. These kind of tools are Program
Comprehension systems. One of the most important feature used
in this kind of tool is the software visualization. We feel that would be
very useful to define criterion to evaluate visualization systems that are
used for program comprehension. The main objective of this paper is
to describe and discuss a set of evaluation parameters for this kind of
systems.FC
