* R> ( R: a -- a R: ) get back a value from the return-stack that had been saved there using >R . This is the traditional form of a local var space that could be accessed with R@ later. If you need more local variables you should have a look at LOCALS| which does grab some space from the return-stack too, but names them the way you like.
R>
( R: a -- a R: )
>R
R@
LOCALS|
FORTH/ANS core compiling primitive