User Manual
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of the variable by adding or subtracting, variable). 
【Rename variable】 
● Rename the variable. 
【Delete variable】 
● Delete the variable. 
1.6.14 Function 
【to (do something)】 
● Users can define a new function without a return value. 
【to (do something) return []】 
● Users can define a new function with a return value. 
【if [] return []】 
● Conditional judgment sentence that can only be placed in the built-in 
function. 
Note: 
1. The defined function should be placed in front of the main programs. 










