two-swap:core — ordinary primitive
FORTH
2SWAP ( a,a b,b -- b,b a,a )(
)
double-cell swap, see SWAP and 2DUP
simulate: : 2SWAP LOCALS| B1 B2 A1 A2 | B2 B1 A2 A1 ;
dpANS .6.1.0430 - standard forth word