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Require is the function used to import some modules.
There are three modules that you can 'require': physics, color, and strict.
- physics is the Physics Engine.
- color is just a table containing colors. (color.red (or color["red"]) will return the color code for red.)
- strict is a module (not tested) which, apparently, makes it so Lua checks uses of undeclared global variables. All global variables must be 'declared' through a regular assignment (even assigning nil will do) in a main chunk before being used anywhere or assigned to inside a function.
Usage: require 'modulename'
This has been introduced in TI-Nspire OS 3.2 (Changes).