# Annotation Glossary

### O

out caller-allocates

  Out parameter, where caller must allocate storage.

out

  Parameter for returning results. Default is transfer full.

### A

allow-none

  NULL is ok, both for passing and for returning.

### I

inout

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

### T

transfer none

  Don't free data after the code is done.

### A

array

  Parameter points to an array of items.

### E

element-type

  Generics and defining elements of containers and arrays.

### T

transfer container

  Free data container after the code is done.

transfer full

  Free data after the code is done.

type

  Override the parsed C type with given type.