Complex sentence: Modifiers may not need to be added depending on what trick is performed and are often abbreviated (e.g., Fingerless to FL, which means the trick is executed without the initial push of a finger).
Split into simpler sentences: Modifiers may not need to be added depending on what trick is performed. Modifiers are often abbreviated (e.g., Fingerless to FL, which means the trick is executed without the initial push of a finger).