Extend does have an adequate Trace feature, and any block's trace statements of information can be customized. No doubt in response to academic requests, Imagine That has incorporated more statistical analysis and variance reduction techniques into recent releases of Extend. The model will allow you to record and clear statistics at points throughout the model's run, to eliminate initialization bias. Also, its ability to implement Common Random Numbers has been greatly improved. If a great deal of data is being generated, virtually any points within the model can be linked through reporting blocks to text files that will accumulate the information.
Storage is limited only by hard disk size.
Despite the added features, however, Extend still may not fulfill all the requirements of a demanding researcher. Some distributions, such as beta or Pearson types V and VI, are not available. And, as mentioned previously, customizing a model for special operating conditions can be tricky. Support Technical support is available at no cost from Imagine That. This is without a doubt one of the strongest points of this package.