NOVELTY - The clip (100) has a U-shaped gasket arranged beneath an upper holding structure and on an upper surface of an upper panel rail (30) that is in U-shape. The U-shaped gasket has two saw-tooth surfaces that face each other on an interior of the gasket. The gasket comprises a connection prong interfacing with a complementary concavity on the clip, where the first saw-tooth configuration is smaller than the second saw-tooth configuration. A base structure is arranged to extend parallel to an upper surface of the upper panel rail.    USE - Panel clip for use in bidirectional panel support array (claimed) for a photovoltaic solar panel system on a building roof.    ADVANTAGE - The clip is designed such that panels and installation site are less likely to be damaged during installation and the panel system is easily installed on-site while still resulting in a precise configuration for purposes of mounting the solar panels. The solar panel support system can be quickly assembled on-site. The support system can achieve close tolerances during field installation without the necessity of skilled labor at the installation site. The support system can be easily adapted to a wide variety of solar panel array sizes and shapes. The support system minimizes the necessity for precise measurements at the installation site during installation. The support system can be arranged at a variety of different positions and configurations. The support system can be precisely configured to a specific environment such as a building roof. The mounting system can accommodate easy installation and removal of panels on adjacent frameworks. The deployment of the support system using rotating connection members can be precisely adjusted.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a bidirectional panel support array.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a support system with solar panels.    Photovoltaic panels (12)    I-beams (14)    Tilt mounting brackets (16)    Upper panel rail (30)    Panel clip (100, 100', 120, 145)