presentation,having a first half segment (1), a second half segment (2) and a rotary joint (3)where the first half-section (1) has a first inner longitudinal side (4) and a first inner forehead side (5) forming at its connecting base a first inner vertical boundary edge (6), and where the first half-section (1) has a first outer longitudinal side (7) and a first outer forehead side (8), forming a first outer vertical boundary (9) on its connecting line,and with the first pages forming a first interior (10), the second half-section (2) having a second inner longitudinal side (11) and a second inner forehead side (12) forming a second inner vertical boundary at its connecting base line (13), and where the second half-section (2) has a second outer longitudinal side (14) and a second outer forehead side (15) forming a second outer vertical boundary at its connecting line (16),and where the second sides form a second interior (17), where the pivoting joint (3) connects the first half segment (1) at the first inner vertical boundary edge (6) to the second half segment (2) at the second inner vertical boundary edge (13) by a high axis swivellable,where the presentation cabinet is so designed that the half-assemblies (1, 2) are irreconcilable in a stretched arrangement, a twisted arrangement and a closed arrangement,where, in the extended arrangement, the inner longitudinal sides (4, 11) are arranged in a plane,where, in the angular arrangement, the inner longitudinal sides (4, 11) have an angle between 0 degree and 180 degree; andwhere, in the closed arrangement, the inner longitudinal sides (4, 11) are arranged parallel to each other.
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