// stack.asm:	WORD p_2swap, '2SWAP',fasm

anchor:p_2swap[]

=== Word: 2SWAP

....
Data stack: ( v1 v2 v3 v4 -- v3 v4 v1 v2 )
....

"2SWAP" is a function word the reorgnizes the top 4 cells swappping
the upper and lower pair. This is similar to <<p_swap,SWAP>> but
working with cell pairs rather than single cells.

====
.Definition concept for 2SWAP
****
( v1 v2 v3 v4 -- v3 v4 v1 v2 ) : 2SWAP 3 ROLL 3 ROLL ;
****
====