Documentation is an integral part of any product development. Product and documentation should co-evolve; whenever the product is changed the documentation should be updated and vice versa. Yet, oftentimes, multiple documentation and product versions may exist; between and within the documentation of the product, relations and dependencies may or may not be explicit, documented, trustworthy or consistent. For example, dependencies may not be explicitly stated (or different terms may be used for the same concepts), obscure jargon and technical abbreviations may be used inconsistently.