A regular feature of Dragon for many years was its "Ecology of ..." articles as sometimes discussed by the fictional sage Elminster, in which a particular D&D monster received an in-depth review, explaining how it found food, reproduced, and so forth. Under Paizo's tenure such ecology articles became heavier in "crunch" (game mechanics) as opposed to "fluff" (narrative and description) than previously.[18] The Dragon submissions guidelines explicitly stated that Ecology articles "should have a hunter’s guidebook approach, although it should not be written 'in voice'" and further call out the exact format of Ecology articles, leaving less room for artistic license by the author.[18]