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# R Comments Comments are primarily used to explain a piece of code, making it easier for readers to understand. Comments in programming languages are ignored by the compiler and do not affect code execution. Generally, comments in programming languages are divided into single-line comments and multi-line comments, but the R language only supports single-line comments, using the # symbol. Actually, if you have multiple lines of comments, you just need to add a # symbol to each line. ## Single-line Comment # This is my first programming code myString <-"Hello, World!" print( myString ) ## Multi-line Comment # R language to add two numbers # Variable assignment a <-9 b <-4 # Output result print(a + b) Actually, there is another workaround for multi-line comments, which is to use the if statement, as shown in the following example: ## Multi-line Comment if(FALSE){ " This is an example of a multi-line comment The comment content is placed between single quotes or double quotes " } myString <-"Hello, World!" print( myString)