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The organized TPT lua reference
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From the point of a person that speaks lua
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You can hash-link to any element of this tree,
like this: http://mniip.com/powder/lua/#tpt.version.major
Functions are colored in the return type,
and the arguments are colored in their types,
with the default value (if any) following the argument in braces:
func(a,b13)
A function that returns a string,
and takes an element and a number as its arguments.
If the number is omitted, the default value of 13 will be used

If a function returns multiple values, they are covered in the description.