Before revision:  In this paper, we present Anteater, an interactive visualization system for tracing and exploring the execution of a program. While existing debugging tools often have visualization components , these components are often added on top of an existing environment.
After revision:  In this paper, we present Anteater, an interactive visualization system for tracing and exploring the execution of Python programs. Existing systems often have visualization components , these components are often added on top of an existing environment.