Glossary

PC - Pony Club 
SH -  Showhunter 
SJ - Showjumping 
Closed Ribbon Day - Closed To Only Members of That Pony Club 
Open Ribbon Day  - Open to Anybody (ORD) 
SX Show Cross -  Showjumping with Short Cross Country Course
CT Combined Training  - Dressage Followed By Showjumping 
HT  - Horse Trials 

ODE  - One Day Event 
2DE  - Two Day Event 
3DE -  Three Day Event

Pony Club:
PI  - Pre Intro Level 
I -  Intro Level 
PT -  Pre Training Level
T  - Training Level 
O  - Open Level 

Horse Trials:
T  - Training Level 
PN -  Pre Novice Level 
N  - Novice Level 
ON  - Open Novice Level 
I  - Intermediate Level 
A -  Advanced Level