Use the IF keyword to execute a block of statements only if a condition is true.
Optionally, you can also specify additional blocks that are executed only if the previous conditions are false and a new condition is true (ELSEIF), or that are executed only if all other blocks are false (ELSE).
Example:
sub main()
a = 10
b = 0
c = 0
if a > 5 then
printl("a > 5")
elseif b > 5 then
printl("b > 5")
elseif c > 5 then
printl("c > 5")
else
printl("a, b, and c < 5")
end if
// note the following difference due to b being numeric variable
