The Ariadna Index developed by us is based on the idea of single-sourcing, i.e. the repeated use of the same text in different contexts. This approach is dedicated primarily to utility texts, such as user manuals. It allows automatic creation of several versions of the documentation, e.g. one for beginners and one for advanced users. We offer adaptation of existing single-sourcing technologies (such as DITA) to the individual needs of our clients.