if set true
    echo in if
end_if

if set false
    echo should not be here
else
    echo in else
end_if

if set false
    echo should not be here
elseif set true
    echo in else if
else
    echo should not be here
end_if

if set false
    echo should not be here
elseif set true
    echo in else if but not done yet

    if set true
        echo nested if
    end_if
else
    echo should not be here
end_if