This documentation is not using the current rendering mechanism and is probably outdated. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
With the extension
pdfviewhelpers we try to take the pain out of creating PDF documents.
We aim at providing the best service possible by constantly improving the extension and responding fast to bug reports.
We do this fully free of cost, mostly because we love to code and share. However we are still human and have human needs like food, shelter and beer.
So if you feel like this extension was useful to you and saved you and your business some precious time, please consider making a donation to support its maintenance and further development.