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ramp 
Wooden U-shaped track that is set up for performing various acrobatic stunts (such as jumps and slides).
coping 
Metal rail at the platform’s edge; skateboarding tricks include sliding along it and balancing on it with one hand or the board.
vertical section 
Level section at the end of the ramp; it is used by the skateboarder to gain sufficient height for doing tricks in the air.
guard rail 
Metal handrail attached to the platform.
flat 
Flat level surface between the two curved sections of the ramp.