# Parameter Passing (Out)

> [HTML Version](parameterpassing(out).htm)

In addition to the [Return Expression](returnexpression.md) of a function, both functions and procedures can pass updated values of the parameters they received back to the calling routine, by using [XPUTARG](xgetarg_xgetargs.md). 

**See Also**

•	The discussion on [Parameter Type and Size](parametertypeandsize.md).