Once the model creation and development are completed, the design or investigation of the completed model can begin using the spColumn Solver by choosing one of several methods of running the model. The choice depends on the user preference for design or investigation of the model as well as to run from within the program user interface or via the external API using the Column Text Input (CTI). In all cases the user may Solve models individually or in batch mode to facilitate and expedite running multiple models at once.