Abstract
The MT-constructor is software creating a source of a concrete presentation of a task based on a skeleton of this task. It is a component of the software system MT.
The system MT creates tests composed of self-modified tasks. Such a task can contain varied texts, graphs, graphic schemes and pictures.
The constructor creates a modification of a task based on a parametric qualitative and quantitative specification. The system MT runs on the first medical faculty of Charles University in Prague in an internal regime and it can't be published.