Bursts of writing, extracted from online recordings of the writing process, have proved an invaluable vantage point into the cognitive mechanisms at work during written language production. Crucially, they show that writers, much like speakers, produce language through a sequence of small ‘chunks’, patterns-like groupings of words that do not necessarily match the structures of theoretical grammars. As such, they are intriguing objects, whose linguistic properties are yet to be understood. To contribute to this endeavor, we track all instances of French so-called clitic subjects in a corpus of 81 keylogs of short essays written by undergraduate students in experimental conditions. We show that these clitic subjects are attracted to the burst-initial position, favoring resumption of the production after revision events. Moreover, they also act like discursive hubs in that writers are more likely to revise up to a clitic subject and restart from there, possibly relying on an entirely different structure. Therefore, they play the role of landmarks in the writing process, from which information can flow, and to which writers can get back to develop alternative discursive strategies. These results hint that the writing process and the information structure of the product are likely to be intimately intricated.