original_query: What is the purpose of the Systems Biology Markup Language (SBML)?
query: What is the purpose of the Systems Biology Markup Language (SBML)?
answer: SBML's main purposes are to enable the use of multiple software tools without rewriting models, to enable model sharing and publication, and to ensure model survival beyond the lifespan of the software used to create them.  It acts as a lingua franca for exchanging essential aspects of computational models between different software tools.