inlined sql functions in 7.4

    Hi!

    I found the very useful feature into 7.4 release

> Release Notes 7.4:
>    Function-inlining for simple SQL functions
>    Simple SQL functions can now be inlined by including their SQL in the main query.
>    This improves performance by eliminating per-call overhead.
>    That means, simple SQL functions now behave like macros.

    but, i can't find any docs about syntax :(

    Could you point me in the right direction?

    Thx in advance

    Aleksey