I have found a bug on page control-structures.alternative-syntax.html
[chm date: 2002-04-20]...

this applies to current web version of alternative syntax for control structures section as well - the example says:

<?php if ($a == 5): ?>
A is equal to 5
<?php endif; ?>

text directly below it says:

In the above example, the HTML block "A = 5" is nested within an if statement written in the alternative syntax. The HTML block would be displayed only if $a is equal to 5. 

I believe "A = 5" should say "A is equal to 5"