a small fraction of the overall side edge length of the cd case indeed in some side tabs cover only 2 0 cm of a total 12 5 cm side edge length in other words only about 20 of the side edge length of the cd case is covered by booklet holding tabs in accordance with the invention improvement can be achieved by providing slot flanges that cover a larger percentage of the side edge length in some embodiments at least half and preferably most of the side edge length is covered however benefits of the invention can be achieved even when a lesser portion such as 25 to 50 of the side edge length is collectively covered by slot flange portions in one embodiment the slot flange portions cover about one third of the side edge length in another the slot flange portions cover about two thirds of the side edge length i e for a 12 5 cm side edge length the slot flange portions collectively cover about 8 cm for embodiments wherein the slot flange width i e the distance to which the flange extends outwardly from the side wall varies along its length the 34 covered portion 34 of the side edge length may be defined as the total length covered by portions of the flange having widths equaling or exceeding the full width half maximum width of the flange as with the embodiment of fig2 no openings through the side walls are employed hence disadvantages of such openings described above are also avoided it should be noted however that benefits of.