In this article we present the multi-structured documents problem and offer an overview of existing solutions. We then notice that they do not consider the problem of con- structing such documents. In this context, we use our expe- rience with philosophers who are building a digital edition of the work of Jean-Toussaint Desanti, in order to present a methodology for the construction of multi-structured doc- uments. This methodology is based on the MSDM model in order to represent such documents. Moreover each step of the methodology has been implemented in the Haskell functional programming language.