Abstract: In the described awning of variable size comprising a canvas (1, 2) which can be wound up on a shaft (3) provided with a drive, the canvas (1, 2) is fastened to the shaft (3), which has only one single drive, at a parting or folding line, and for winding up or unrolling the canvas parts (1, 2) provided by the parting or folding line, at least one tensioning rope (6, 6') is provided which engages at the canvas (1, 2) and which can be coiled up on the shaft (3) on at least one coiling pulley (5, 5') seated on the shaft.