For the time being the feature is not supported.

However PD4ML implements a proprietary tag, which could help to achieve the needed result.

Currently the tag is undocumented and we use it only in DXL->PDF conversion scenarios. I am afraid the tag has some limitations – I need to check.

But the idea is as follows: you may add a sequence of tags at the end of the main document:

The tags will be ignored by the browsers, but PD4ML will include the referenced documents. Of course, in forthcomming versions, we could automate the process and to implicitly build the list from tags.