Canvas cover for a commercial vehicle

The structure (P) has an locking device (15) holding a clamping element (13) with the closed tarpaulin structure in a closed position, and releasing the clamping element to disconnect the element from the locking device for displacing a side part (1) of the tarpaulin into an open position. A receiver (18) is arranged at the side part of structure, where the clamping element is fixed at an upper end section (21) of the receiver with the opened side part. The upper end section is turned toward an upper edge of the structure that is turned away from a loading area (7) of a commercial vehicle.