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Data stack

drop       w --       core       ``drop''

nip       w1 w2 -- w2       core-ext       ``nip''

dup       w -- w w       core       ``dup''

over       w1 w2 -- w1 w2 w1       core       ``over''

tuck       w1 w2 -- w2 w1 w2       core-ext       ``tuck''

swap       w1 w2 -- w2 w1       core       ``swap''

rot       w1 w2 w3 -- w2 w3 w1       core       ``rote''

-rot       w1 w2 w3 -- w3 w1 w2       gforth       ``not-rote''

?dup       w -- w       core       ``question-dupe''

pick       u -- w       core-ext       ``pick''

roll       x0 x1 .. xn n -- x1 .. xn x0         core-ext       ``roll''

2drop       w1 w2 --       core       ``two-drop''

2nip       w1 w2 w3 w4 -- w3 w4       gforth       ``two-nip''

2dup       w1 w2 -- w1 w2 w1 w2       core       ``two-dupe''

2over       w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2       core       ``two-over''

2tuck       w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4       gforth       ``two-tuck''

2swap       w1 w2 w3 w4 -- w3 w4 w1 w2       core       ``two-swap''

2rot       w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2       double-ext       ``two-rote''


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