Flying an U-circuit or constant aspect approach for landing starts at the position indicated by 1 by losing height. You fly circles until you have reached the right height to start the rest of the landing circuit.

FL095 means Flight Level 9500 feet. Flight level is an aircraft's altitude at standard air pressure indicated in hundreds of feet.

How much is 'enough' depends on the situation! See the chapter on Rules and regulations.

A porous canopy will have air leaking through, disrupting the air flow around it. Lift decreases and therefore the minimum speed or stall speed increases. The wing will stall at a higher speed and is more likely to have its air flow disrupted and therefore enter a deep stall.

On the right is in the right. The one coming from the left gives way.
See the chapter on Rules and regulations

The ratio between lift and drag is the same for a heavy or light pilot, all other things being equal. The ratio between forward speed and sink rate is therefore also the same for these two pilots. Their glide ratio is the same and they fly the same distance.
However, both the forward speed and sink rate increase with increasing weight. Therefore the heavier pilot flies faster and goes down faster. Both fly the same distance, but the heavier pilot reaches goal earlier.
See the chapter on Aerodynamics.

A larger glide ratio means you can fly further for every metre of descent. Therefore it means a flatter flight path. Since the glide angle is the angle between the flight path and the horizon, this angle decreases when the glide ratio increases.

UV-radiation will always damage the fabric.
See the chapter on Equipment.

The stabilo line connects to the stabilo panel at the tips of the canopy.

The photo shows a static winch mounted on a trailer. During towing it stays in one place.