Abstract: This invention is for a publication, loose leaf card file or the like, embodying an improved manual sheet separation format, wherein each aligned single sheet of the stack of flexible sheets has a notch (for thumb insertion) in a free edge of said sheet, the notch centers of adjacent sheets being displaced from each other so that an area of each sheet's individual notch superimposes (and exposes) a portion of the adjacent sheet's face edge; one improvement being the placement of an identification notch marker on each sheet's face edge adjacent to the rim of said notch at an area where each stacked sheet's face edge overlies (and conceals from view) the marker on the underlying adjacent sheet; another improvement being the provision of a recessed thumb pivot area along a common side of said stacked sheets, the pivot area being the area of partial overlap of notches in the free edges of the uppermost adjacent stacked sheets; the pivot area serving as an efficient location for one to grip the stacked sheets and