A device, comprising: a first portion and a second portion; and, a determinative hinge assembly (106) rotatably securing hinge ends of the first and second portions (102, 104) for a first range of rotation around a first hinge axis (116) associated with the first portion and a second range of rotation around a second hinge axis (116) associated with the second portion, the hinge assembly (106) comprising: a communication member that includes a first hinge pin (304) that lies along the first hinge axis (116) and a second hinge pin (304) that lies along the second hinge axis (116); and a first detent-priority sub-assembly (314) and a second detent-priority sub-assembly (314) that control an order of rotation around the first and second hinge axes (116, 116); wherein the first detent-priority sub-assembly (314) comprises: a first biased member (318) and a first spring (324) that exerts a force on the first biased member (318) orthogonally toward the first hinge axis (116) to engage the first biased member (318) with a first rotation-control element (316) attached to the first hinge pin (304 in a non-rotating manner, the first rotation-control element (316) including a first detent (328) on an outer circumferential side of the first rotation control element (316), the first detent (318) having a first depth; wherein the second detent-priority sub-assembly (314) comprises a second biased member (318) and a second spring (324) that exerts a force on the second biased member (318) orthogonally toward the second hinge axis (116) to engage the second biased member (318) with a second rotation-control element (316) attached to the second hinge pin (304) in a non-rotating manner, the second rotation-control element (316) having a second detent (328) on an outer circumferential side of the second rotation control element (316), the second detent (328) having a second depth that is different than the first depth; and wherein the first detent (328) is located part way through the first range of rotation such that with the first and second portions (102, 104) positioned against one another and a force applied to rotate the first and second portions (102, 104) away from one another, the first portion rotates around the first hinge axis (116) until the first biased member (318) engages the first detent (328) when the first portion has rotated part way through the first range of rotation, and then the second portion completes the second range of rotation around the second hinge axis (116) before the first biased member (318) is forced out of the first detent (328) to allow rotation to return to the first hinge axis (116) to complete the first range of rotation of the first portion. a first portion and a second portion; and, a determinative hinge assembly (106) rotatably securing hinge ends of the first and second portions (102, 104) for a first range of rotation around a first hinge axis (116) associated with the first portion and a second range of rotation around a second hinge axis (116) associated with the second portion, the hinge assembly (106) comprising: a communication member that includes a first hinge pin (304) that lies along the first hinge axis (116) and a second hinge pin (304) that lies along the second hinge axis (116); and a first detent-priority sub-assembly (314) and a second detent-priority sub-assembly (314) that control an order of rotation around the first and second hinge axes (116, 116); wherein the first detent-priority sub-assembly (314) comprises: a first biased member (318) and a first spring (324) that exerts a force on the first biased member (318) orthogonally toward the first hinge axis (116) to engage the first biased member (318) with a first rotation-control element (316) attached to the first hinge pin (304 in a non-rotating manner, the first rotation-control element (316) including a first detent (328) on an outer circumferential side of the first rotation control element (316), the first detent (318) having a first depth; wherein the second detent-priority sub-assembly (314) comprises a second biased member (318) and a second spring (324) that exerts a force on the second biased member (318) orthogonally toward the second hinge axis (116) to engage the second biased member (318) with a second rotation-control element (316) attached to the second hinge pin (304) in a non-rotating manner, the second rotation-control element (316) having a second detent (328) on an outer circumferential side of the second rotation control element (316), the second detent (328) having a second depth that is different than the first depth; and wherein the first detent (328) is located part way through the first range of rotation such that with the first and second portions (102, 104) positioned against one another and a force applied to rotate the first and second portions (102, 104) away from one another, the first portion rotates around the first hinge axis (116) until the first biased member (318) engages the first detent (328) when the first portion has rotated part way through the first range of rotation, and then the second portion completes the second range of rotation around the second hinge axis (116) before the first biased member (318) is forced out of the first detent (328) to allow rotation to return to the first hinge axis (116) to complete the first range of rotation of the first portion.