ansi .6.1.2070
<CORE>
fetch the (upper-most) value from the return-stack that had
been saved there using >R - This is the traditional form of a local
var space. If you need more local variables you should have a
look at LOCALS| , see also >R and R> .
reference: p4_r_fetch in ../src/core.c:1582, export CO R@