to the sheet like material 1102 for example adhesively in this embodiment the rail 1101 has two wings 1103 coated with an adhesive 1104 on one side 1105 which are then folded down c into contact with the sheet like material 1102 alternatively in fig1 the rail 1101 may be attached to the sheet like member with one wing 1103 coated with an adhesive 1104 on one side in this embodiment of the invention the wing is extruded along with the rail and is an integral part of the rail the wing may be attached to the inside or outside of the sheet like material the wing or wings can serve as handholds when sliding the tab along the rail alternatively as shown in fig1 the rail 1201 may be fully integrated with the sheet like material 1202 for example the sheet like material and rail can be a single extrusion of a polymeric material alternatively the sheet like material may be an extruded lamination including a core material for example card stock or the like and an outer material for example an extruded polymer from which the rail is also formed integral with the completed article as shown in fig1 there are preferably handholds 1203 or reinforced areas adjacent to the rail that facilitate moving the tab from.