How To Without Simulink Xorum: An Introduction To Xorum Note that in order to use default customizations, you must always tweak Xorum’s native behavior. For step-by-step articles on it, take a look at this short video series: The Xorum Design Guide By Brian K. Hughes and David Zuker This article was amended on 18 June 2016, taking some of the advice also from those on the internet that Xorum’s ability to shrink images over time is questionable. See this post for more background on this issue, and this post for the reasons why.