A code block consists of a set of instructions, called statements, that are then interpreted by GameMaker Studio 2 and used to make something happen within your game. That "something" can be as simple as adding 2 and 2 to get 4, or as complex as making an enemy run away when their health gets below a certain value. The actual structure of the program can vary greatly, depending on the functions it uses, but broken down to basics it just looks like this: ~~~ <statement>; <statement>; ... ~~~ Statements should be separated with a ';' symbol to prevent errors with variable declarations and to keep your code clean and tidy, and can consist of variable declarations, expressions and calls to specific functions or scripts. Here is a more visual representation of how a code block can look, this time created as a script in the GameMaker Studio 2 Script Editor: 一個代碼塊是由幾個單句組成的，每個單句之間需要適用“；”做分割。 單句的數量可多可少，取決于模塊的功能作用大小，或者說在游戲里面產生的效果大小。例如：  There are a number of different types of statements and functions, which are discussed at length in subsequent sections of the manual. 以上幾種不同類型的代碼和函數，將在本手冊的后續章節中詳細討論。