1. Vertical: This is a single pole or rail placed vertically on standards. The height of the vertical can vary depending on the level of the competition.
2. Oxer: An oxer consists of two poles or rails placed in a vertical line with a spread (distance) between them. The spread can vary, making it more challenging for the horse to clear.
3. Triple Bar: A triple bar consists of three poles or rails placed in a vertical line with equal distances between them. It requires precise footwork and timing from both the horse and rider.
4. Liverpool: This obstacle resembles a water jump, but it is usually filled with soil or sand instead of water. The liverpool can have various widths, and the horse needs to clear the obstacle without touching the filler material.
5. In-and-Out: This combination involves two fences placed close together. The horse needs to jump the first fence, take a short stride within the combination, and jump the second fence immediately.
6. Open Water: This obstacle consists of a shallow pool of water that the horse and rider must jump over without touching the water with their feet.
7. Wall: A wall is an upright obstacle that may be made of wood, stone, or other materials. The horse must clear the wall without knocking it down or touching it with their legs.
8. Gate: A gate is similar to a wall but has an opening in the middle. The horse must jump through the opening without touching the gate or its frame.
9. Double: A double consists of two obstacles placed in a straight line with a short distance between them. The horse must clear both obstacles in a fluid motion without breaking its stride.
10. Triple: Similar to a double, a triple consists of three obstacles placed in a straight line with short distances between them. The horse must clear all three obstacles in a rhythmic sequence.
These are just a few of the many symbols that can be used on a show jumping course. The course designer arranges them in a specific order and sequence to create a challenging and engaging course for the competitors.