What’s the difference…

So, what’s the difference between this:

<!--#if expr="${GETDOC3}"-->
<!--#include virtual="doc3.html"-->
<!--#endif-->

and this?

<!--#if expr="${GETDOC3}" -->
<!--#include virtual="doc3.html" -->
<!--#endif -->

Answer: the stupid space before the --> marker. Without that little space, your server side includes won’t play nice with Apache 1.3.