ABCpdf holds a cache of recently requested URLs, and it's only
after five minutes or so that these pages expire from the
Searching the page cache before rendering a URL results in a
considerable degree of optimization for many common operations.
However, if you wish to bypass the cache, you can do so by
setting this property to false. When the cache is disabled, the
registry value MakeURLsUnique takes
effect, and the actual URL may be modified.