Table can also be used as a structure data type similar to other programming languages.  There are two ways to do this:

> t = {name = "Jane Doe", grade = 4.0}

Or equivalently:

> t = {} // Create an empty table first

> t.name = "Jane Doe"

> t.grade = 4.0

Once created, the fields can be accessed using the table.fieldname format as below:

> print(t.name)

Jane Doe

You can assign a table to a field, too.  For example, if you want to store all grades as an array:

> t.grade = {4.0, 3.5} // field grade is a table array now

> print(t.grade[1], t.grade[2])

4.0                3.5

Or, even a vector data type:

> t.grade = [4.0, 3.5] // field grade is a Vector now

> print(t.grade(1), t.grade(2))

4.0                3.5

Variables can also be assigned to fields.

Tables support a set of other functionalities.  See Vector and Matrix Operations for more information.