SdlBasic development started at December 2002, when its author, Vroby (Roberto Viola), got an idea on using SDL libraries on wxBasic core, instead of wxWidgets libraries.
The support site (online documentation and forum) has moved and has changed maintainer. Now to be found at the link added below, on altervista.org. The original author still contributes to the forum.
Function swap( a, b )
tmp = a
a = b
b = tmp
End Function
v1=10
v2=20
print v1, v2
swap( v1, v2 )
print v1, v2