A picture of the new step-by-step process of building construction called "flow 640", which ensures optimal continuity of the individual professional parts of building construction.
| Directing | Oldřich Mirad | Director |
| Writing | Oldřich Mirad | Idea |
| Writing | Oldřich Mirad | Screenplay |
| Camera | Zdeněk Hrubec | Director of Photography |
| Editing | Zdeněk Stehlík | Editor |
| Production | Dušan Schaffer | Production Manager |
