In this essay I examine instances of scribal assimilation in ancient Jewish scripture and identify the literary Jackets/Outerwear features that triggered scribal recollections of other texts.I argue that some instances of assimilation can be understood as inter-textual allusion, and should be analyzed as such with reference to their formal Playmats features and possible exegetical functions.Finally, I conclude with reflections on the relationship between assimilation and the formation of a scripture collection.