The fil rouge of the course is a short fiction, produced to represent and explain some of the fundamental steps of a negotiation.

The visual part is enhanced thanks to the use of the drawn line. Not only keywords, lists, tables, graphics, but also small animated characters to support the story. All elements with which teachers interact. The line is the element that best matches the concept of 'meeting point', when two lines start from different points and meet halfway. It is also representative of a path to achieve a goal.