This property controls how many times ABCpdf will attempt to
obtain a page.
HTML rendering may fail one time but succeed the next. This is
often for reasons outside the control of ABCpdf.
So ABCpdf may attempt to re-request a page if it is not
immediately available. This is analogous to clicking on the refresh
button of a web browser if the page is failing to load.
See the ContentCount and the
Timeout properties for how ABCpdf
determines if a page is unavailable or invalid.