Initial commit

tests/testlevel2/level2if1.vsl

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+PROTO VOID compare(x,y)
+FUNC VOID main() { compare(2,1) compare(1,2) compare(1,1) }
+FUNC VOID compare(x,y) IF x-y	THEN PRINT x, " est different de ",y,"\n"
+				ELSE PRINT x, " est egal a ",y,"\n"
+				FI
+
+