In his work writing content for am online marketing agencies, Mark has written numerous articles on a variety of subjects. One area of interest that he has experience writing about, and personal experience working in, is the retail industry. Mark's direct experience of the retail industry allows him clear insight into the way the retail world works and allows him to explain complex matters quite clearly and effectively. Mark is personally familiar with all kinds of retails systems including inventory management, POS software and other applicable retail business systems, and he has written numerous articles about them for online marketing agencies. Below is an excerpt from one such article.