Print

Print is one of the basic functions of Roblox scripting; it is a very simple method with a tuple of parameters. The method shows in the Roblox Studio's output box whatever string is entered in the parameters, or if there is a polynomial within the parameters, whatever the polynomial equals. For example, would make

Hello World

Strings vs. Polynomials
If you want to output exactly what is typed within your parameter, you enter the text within double quotes within the parentheses, however if you are trying to make RBLX.lua calculate a polynomial, then do not use double quotes, and simply enter your polynomial in the parentheses. As an example:

would output:

1+1

But would output:

2

Use of Variables
Variables can also be inputted into the parameters, for example

would output:

Hello World!

Note that the quotes rule still applies as before, so would output:

2

In addition... would output:

6

Usage
As the print function does not actually interact with the service, scripters mainly use this function for debugging to check if and when a certain action in their script has been performed, and, if one of the actions failed, which action in the script failed.