See:

• Lua beginners guide
• GitHub

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Relational operators

Symbol	Description
==	Equal to
~=	Not equal to
>	Greather than
>=	Greather than or equal to
<	Less than
<=	Less than or equal to

Arithmetic operators

Symbol	Description
+	Add
-	Subtract
*	Multiply
/	Divide
^	Exponents
%	Remainder (Modulo)

Lexical

• and
• or
• not

Loops

• for
• foreach
• while
• repeat until