Merge multiple HTML documents into a single document.
| Port | Description |
| source primary sequence |
| Port | Description |
| result primary |
Before merging, the sectioning hierarchy of each document is normalized. A sequence
is then created of all the The first document's |
| mapping |
|
| Local Name | Namespace URI | Default | Description |
| output-base-uri required | The base URI of the result document. |