A panel support system, comprising: an elongate channel section; and a mechanism for the adjustment of the vertical alignment of a panel inserted into the elongate channel section, the mechanism contained within the elongated channel section, the mechanism comprising: one or more support means for supporting the panel within the channel section; and one or more clamping parts for clamping the panel within the support means with an adjustable force; and characterized in that: the elongate channel section has a radius groove running along an inside surface thereof; the one or more support means consist of a pair of support plates for being placed each at one side of the panel, wherein each support plate comprises an angled ramp on a side thereof; and the one or more clamping parts comprising a threaded screw fastening and arranged between the support plates and the elongated channel section, in the radius groove and against the angled ramp, such that the clamping parts self-align in the radius groove with the one or more support plates, such that when a panel is inserted into the elongate channel section, turning a head of the threaded screw fastening varies the distance between the support plates and the inside surface of the elongated channel structure creating a wedging action against the radius groove and the angled ramp that clamps with the adjustable clamping force; wherein, the adjustable clamping force, by virtue of the angled ramp, is applied to the panel support plates at some inclined angle to the panel, such that the adjustable clamping force has a force component that forces the panel into a base of the elongate channel section, which clamps a lower edge of the panel in the elongated channel section to adjustably tilt and secure the panel so as to be maintainable substantially vertically aligned even when the elongated channel section is secured to a surface which is substantially non-horizontal. an elongate channel section; and a mechanism for the adjustment of the vertical alignment of a panel inserted into the elongate channel section, the mechanism contained within the elongated channel section, the mechanism comprising: one or more support means for supporting the panel within the channel section; and one or more clamping parts for clamping the panel within the support means with an adjustable force; and characterized in that: the elongate channel section has a radius groove running along an inside surface thereof; the one or more support means consist of a pair of support plates for being placed each at one side of the panel, wherein each support plate comprises an angled ramp on a side thereof; and the one or more clamping parts comprising a threaded screw fastening and arranged between the support plates and the elongated channel section, in the radius groove and against the angled ramp, such that the clamping parts self-align in the radius groove with the one or more support plates, such that when a panel is inserted into the elongate channel section, turning a head of the threaded screw fastening varies the distance between the support plates and the inside surface of the elongated channel structure creating a wedging action against the radius groove and the angled ramp that clamps with the adjustable clamping force; wherein, the adjustable clamping force, by virtue of the angled ramp, is applied to the panel support plates at some inclined angle to the panel, such that the adjustable clamping force has a force component that forces the panel into a base of the elongate channel section, which clamps a lower edge of the panel in the elongated channel section to adjustably tilt and secure the panel so as to be maintainable substantially vertically aligned even when the elongated channel section is secured to a surface which is substantially non-horizontal. one or more support means for supporting the panel within the channel section; and one or more clamping parts for clamping the panel within the support means with an adjustable force; and the elongate channel section has a radius groove running along an inside surface thereof; the one or more support means consist of a pair of support plates for being placed each at one side of the panel, wherein each support plate comprises an angled ramp on a side thereof; and the one or more clamping parts comprising a threaded screw fastening and arranged between the support plates and the elongated channel section, in the radius groove and against the angled ramp, such that the clamping parts self-align in the radius groove with the one or more support plates, such that when a panel is inserted into the elongate channel section, turning a head of the threaded screw fastening varies the distance between the support plates and the inside surface of the elongated channel structure creating a wedging action against the radius groove and the angled ramp that clamps with the adjustable clamping force; wherein, the adjustable clamping force, by virtue of the angled ramp, is applied to the panel support plates at some inclined angle to the panel, such that the adjustable clamping force has a force component that forces the panel into a base of the elongate channel section, which clamps a lower edge of the panel in the elongated channel section to adjustably tilt and secure the panel so as to be maintainable substantially vertically aligned even when the elongated channel section is secured to a surface which is substantially non-horizontal.