A

array

Parameter points to an array of items.

I

inout

Parameter for input and for returning results. Default is transfer full.

T

transfer full

Free data after the code is done.

transfer none

Don't free data after the code is done.

A

allow-none

NULL is ok, both for passing and for returning.

O

out

Parameter for returning results. Default is transfer full.

out caller-allocates

Out parameter, where caller must allocate storage.

I

in

Parameter for input. Default is transfer none.

T

type

Override the parsed C type with given type.