Three-plus
3+
"three-plus" ( n1 | u1 -- n2 | u2 )
Forth79
Forth83
ANSI
Forth200x
Add three (3) to n1 | u1 giving the sum n2 | u2.
das Ergebnis (n2|u2) von Drei plus n1|u1. Die Operation 3 + wirkt genauso